// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
pub use crate::operation::head_object::_head_object_output::HeadObjectOutputBuilder;

pub use crate::operation::head_object::_head_object_input::HeadObjectInputBuilder;

impl HeadObjectInputBuilder {
    /// Sends a request with this input using the given client.
    pub async fn send_with(
        self,
        client: &crate::Client,
    ) -> ::std::result::Result<
        crate::operation::head_object::HeadObjectOutput,
        ::aws_smithy_runtime_api::client::result::SdkError<
            crate::operation::head_object::HeadObjectError,
            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
        >,
    > {
        let mut fluent_builder = client.head_object();
        fluent_builder.inner = self;
        fluent_builder.send().await
    }
}
/// Fluent builder constructing a request to `HeadObject`.
///
/// <p>The <code>HEAD</code> operation retrieves metadata from an object without returning the object itself. This operation is useful if you're interested only in an object's metadata.</p>
/// <p>A <code>HEAD</code> request has the same options as a <code>GET</code> operation on an object. The response is identical to the <code>GET</code> response except that there is no response body. Because of this, if the <code>HEAD</code> request generates an error, it returns a generic code, such as <code>400 Bad Request</code>, <code>403 Forbidden</code>, <code>404 Not Found</code>, <code>405 Method Not Allowed</code>, <code>412 Precondition Failed</code>, or <code>304 Not Modified</code>. It's not possible to retrieve the exact exception of these error codes.</p>
/// <p>Request headers are limited to 8 KB in size. For more information, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/API/RESTCommonRequestHeaders.html">Common Request Headers</a>.</p><note>
/// <p><b>Directory buckets</b> - For directory buckets, you must make requests for this API operation to the Zonal endpoint. These endpoints support virtual-hosted-style requests in the format <code>https://<i>bucket_name</i>.s3express-<i>az_id</i>.<i>region</i>.amazonaws.com/<i>key-name</i> </code>. Path-style requests are not supported. For more information, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-Regions-and-Zones.html">Regional and Zonal endpoints</a> in the <i>Amazon S3 User Guide</i>.</p>
/// </note>
/// <dl>
/// <dt>
/// Permissions
/// </dt>
/// <dd>
/// <p></p>
/// <ul>
/// <li>
/// <p><b>General purpose bucket permissions</b> - To use <code>HEAD</code>, you must have the <code>s3:GetObject</code> permission. You need the relevant read object (or version) permission for this operation. For more information, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/list_amazons3.html">Actions, resources, and condition keys for Amazon S3</a> in the <i>Amazon S3 User Guide</i>.</p>
/// <p>If the object you request doesn't exist, the error that Amazon S3 returns depends on whether you also have the <code>s3:ListBucket</code> permission.</p>
/// <ul>
/// <li>
/// <p>If you have the <code>s3:ListBucket</code> permission on the bucket, Amazon S3 returns an HTTP status code <code>404 Not Found</code> error.</p></li>
/// <li>
/// <p>If you don’t have the <code>s3:ListBucket</code> permission, Amazon S3 returns an HTTP status code <code>403 Forbidden</code> error.</p></li>
/// </ul></li>
/// <li>
/// <p><b>Directory bucket permissions</b> - To grant access to this API operation on a directory bucket, we recommend that you use the <a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateSession.html"> <code>CreateSession</code> </a> API operation for session-based authorization. Specifically, you grant the <code>s3express:CreateSession</code> permission to the directory bucket in a bucket policy or an IAM identity-based policy. Then, you make the <code>CreateSession</code> API call on the bucket to obtain a session token. With the session token in your request header, you can make API requests to this operation. After the session token expires, you make another <code>CreateSession</code> API call to generate a new session token for use. Amazon Web Services CLI or SDKs create session and refresh the session token automatically to avoid service interruptions when a session expires. For more information about authorization, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_CreateSession.html"> <code>CreateSession</code> </a>.</p></li>
/// </ul>
/// </dd>
/// <dt>
/// Encryption
/// </dt>
/// <dd>
/// <note>
/// <p>Encryption request headers, like <code>x-amz-server-side-encryption</code>, should not be sent for <code>HEAD</code> requests if your object uses server-side encryption with Key Management Service (KMS) keys (SSE-KMS), dual-layer server-side encryption with Amazon Web Services KMS keys (DSSE-KMS), or server-side encryption with Amazon S3 managed encryption keys (SSE-S3). The <code>x-amz-server-side-encryption</code> header is used when you <code>PUT</code> an object to S3 and want to specify the encryption method. If you include this header in a <code>HEAD</code> request for an object that uses these types of keys, you’ll get an HTTP <code>400 Bad Request</code> error. It's because the encryption method can't be changed when you retrieve the object.</p>
/// </note>
/// <p>If you encrypt an object by using server-side encryption with customer-provided encryption keys (SSE-C) when you store the object in Amazon S3, then when you retrieve the metadata from the object, you must use the following headers to provide the encryption key for the server to be able to retrieve the object's metadata. The headers are:</p>
/// <ul>
/// <li>
/// <p><code>x-amz-server-side-encryption-customer-algorithm</code></p></li>
/// <li>
/// <p><code>x-amz-server-side-encryption-customer-key</code></p></li>
/// <li>
/// <p><code>x-amz-server-side-encryption-customer-key-MD5</code></p></li>
/// </ul>
/// <p>For more information about SSE-C, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html">Server-Side Encryption (Using Customer-Provided Encryption Keys)</a> in the <i>Amazon S3 User Guide</i>.</p><note>
/// <p><b>Directory bucket permissions</b> - For directory buckets, only server-side encryption with Amazon S3 managed keys (SSE-S3) (<code>AES256</code>) is supported.</p>
/// </note>
/// </dd>
/// <dt>
/// Versioning
/// </dt>
/// <dd>
/// <ul>
/// <li>
/// <p>If the current version of the object is a delete marker, Amazon S3 behaves as if the object was deleted and includes <code>x-amz-delete-marker: true</code> in the response.</p></li>
/// <li>
/// <p>If the specified version is a delete marker, the response returns a <code>405 Method Not Allowed</code> error and the <code>Last-Modified: timestamp</code> response header.</p></li>
/// </ul><note>
/// <ul>
/// <li>
/// <p><b>Directory buckets</b> - Delete marker is not supported by directory buckets.</p></li>
/// <li>
/// <p><b>Directory buckets</b> - S3 Versioning isn't enabled and supported for directory buckets. For this API operation, only the <code>null</code> value of the version ID is supported by directory buckets. You can only specify <code>null</code> to the <code>versionId</code> query parameter in the request.</p></li>
/// </ul>
/// </note>
/// </dd>
/// <dt>
/// HTTP Host header syntax
/// </dt>
/// <dd>
/// <p><b>Directory buckets </b> - The HTTP Host header syntax is <code> <i>Bucket_name</i>.s3express-<i>az_id</i>.<i>region</i>.amazonaws.com</code>.</p>
/// </dd>
/// </dl>
/// <p>The following actions are related to <code>HeadObject</code>:</p>
/// <ul>
/// <li>
/// <p><a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObject.html">GetObject</a></p></li>
/// <li>
/// <p><a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectAttributes.html">GetObjectAttributes</a></p></li>
/// </ul>
#[derive(::std::clone::Clone, ::std::fmt::Debug)]
pub struct HeadObjectFluentBuilder {
    handle: ::std::sync::Arc<crate::client::Handle>,
    inner: crate::operation::head_object::builders::HeadObjectInputBuilder,
    config_override: ::std::option::Option<crate::config::Builder>,
}
impl
    crate::client::customize::internal::CustomizableSend<
        crate::operation::head_object::HeadObjectOutput,
        crate::operation::head_object::HeadObjectError,
    > for HeadObjectFluentBuilder
{
    fn send(
        self,
        config_override: crate::config::Builder,
    ) -> crate::client::customize::internal::BoxFuture<
        crate::client::customize::internal::SendResult<
            crate::operation::head_object::HeadObjectOutput,
            crate::operation::head_object::HeadObjectError,
        >,
    > {
        ::std::boxed::Box::pin(async move { self.config_override(config_override).send().await })
    }
}
impl HeadObjectFluentBuilder {
    /// Creates a new `HeadObject`.
    pub(crate) fn new(handle: ::std::sync::Arc<crate::client::Handle>) -> Self {
        Self {
            handle,
            inner: ::std::default::Default::default(),
            config_override: ::std::option::Option::None,
        }
    }
    /// Access the HeadObject as a reference.
    pub fn as_input(&self) -> &crate::operation::head_object::builders::HeadObjectInputBuilder {
        &self.inner
    }
    /// Sends the request and returns the response.
    ///
    /// If an error occurs, an `SdkError` will be returned with additional details that
    /// can be matched against.
    ///
    /// By default, any retryable failures will be retried twice. Retry behavior
    /// is configurable with the [RetryConfig](aws_smithy_types::retry::RetryConfig), which can be
    /// set when configuring the client.
    pub async fn send(
        self,
    ) -> ::std::result::Result<
        crate::operation::head_object::HeadObjectOutput,
        ::aws_smithy_runtime_api::client::result::SdkError<
            crate::operation::head_object::HeadObjectError,
            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
        >,
    > {
        let input = self
            .inner
            .build()
            .map_err(::aws_smithy_runtime_api::client::result::SdkError::construction_failure)?;
        let runtime_plugins = crate::operation::head_object::HeadObject::operation_runtime_plugins(
            self.handle.runtime_plugins.clone(),
            &self.handle.conf,
            self.config_override,
        );
        crate::operation::head_object::HeadObject::orchestrate(&runtime_plugins, input).await
    }

    /// Consumes this builder, creating a customizable operation that can be modified before being sent.
    pub fn customize(
        self,
    ) -> crate::client::customize::CustomizableOperation<
        crate::operation::head_object::HeadObjectOutput,
        crate::operation::head_object::HeadObjectError,
        Self,
    > {
        crate::client::customize::CustomizableOperation::new(self)
    }
    pub(crate) fn config_override(mut self, config_override: impl Into<crate::config::Builder>) -> Self {
        self.set_config_override(Some(config_override.into()));
        self
    }

    pub(crate) fn set_config_override(&mut self, config_override: Option<crate::config::Builder>) -> &mut Self {
        self.config_override = config_override;
        self
    }
    ///
    /// Creates a presigned request for this operation.
    ///
    /// The `presigning_config` provides additional presigning-specific config values, such as the
    /// amount of time the request should be valid for after creation.
    ///
    /// Presigned requests can be given to other users or applications to access a resource or perform
    /// an operation without having access to the AWS security credentials.
    ///
    /// _Important:_ If you're using credentials that can expire, such as those from STS AssumeRole or SSO, then
    /// the presigned request can only be valid for as long as the credentials used to create it are.
    ///
    #[allow(unused_mut)]
    pub async fn presigned(
        mut self,
        presigning_config: crate::presigning::PresigningConfig,
    ) -> ::std::result::Result<
        crate::presigning::PresignedRequest,
        ::aws_smithy_runtime_api::client::result::SdkError<
            crate::operation::head_object::HeadObjectError,
            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
        >,
    > {
        let runtime_plugins = crate::operation::head_object::HeadObject::operation_runtime_plugins(
            self.handle.runtime_plugins.clone(),
            &self.handle.conf,
            self.config_override,
        )
        .with_client_plugin(crate::presigning_interceptors::SigV4PresigningRuntimePlugin::new(
            presigning_config,
            ::aws_sigv4::http_request::SignableBody::UnsignedPayload,
        ));

        let input = self
            .inner
            .build()
            .map_err(::aws_smithy_runtime_api::client::result::SdkError::construction_failure)?;
        let mut context = crate::operation::head_object::HeadObject::orchestrate_with_stop_point(
            &runtime_plugins,
            input,
            ::aws_smithy_runtime::client::orchestrator::StopPoint::BeforeTransmit,
        )
        .await
        .map_err(|err| {
            err.map_service_error(|err| {
                err.downcast::<crate::operation::head_object::HeadObjectError>()
                    .expect("correct error type")
            })
        })?;
        let request = context.take_request().expect("request set before transmit");
        crate::presigning::PresignedRequest::new(request).map_err(::aws_smithy_runtime_api::client::result::SdkError::construction_failure)
    }
    /// <p>The name of the bucket that contains the object.</p>
    /// <p><b>Directory buckets</b> - When you use this operation with a directory bucket, you must use virtual-hosted-style requests in the format <code> <i>Bucket_name</i>.s3express-<i>az_id</i>.<i>region</i>.amazonaws.com</code>. Path-style requests are not supported. Directory bucket names must be unique in the chosen Availability Zone. Bucket names must follow the format <code> <i>bucket_base_name</i>--<i>az-id</i>--x-s3</code> (for example, <code> <i>DOC-EXAMPLE-BUCKET</i>--<i>usw2-az1</i>--x-s3</code>). For information about bucket naming restrictions, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/directory-bucket-naming-rules.html">Directory bucket naming rules</a> in the <i>Amazon S3 User Guide</i>.</p>
    /// <p><b>Access points</b> - When you use this action with an access point, you must provide the alias of the access point in place of the bucket name or specify the access point ARN. When using the access point ARN, you must direct requests to the access point hostname. The access point hostname takes the form <i>AccessPointName</i>-<i>AccountId</i>.s3-accesspoint.<i>Region</i>.amazonaws.com. When using this action with an access point through the Amazon Web Services SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html">Using access points</a> in the <i>Amazon S3 User Guide</i>.</p><note>
    /// <p>Access points and Object Lambda access points are not supported by directory buckets.</p>
    /// </note>
    /// <p><b>S3 on Outposts</b> - When you use this action with Amazon S3 on Outposts, you must direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the form <code> <i>AccessPointName</i>-<i>AccountId</i>.<i>outpostID</i>.s3-outposts.<i>Region</i>.amazonaws.com</code>. When you use this action with S3 on Outposts through the Amazon Web Services SDKs, you provide the Outposts access point ARN in place of the bucket name. For more information about S3 on Outposts ARNs, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html">What is S3 on Outposts?</a> in the <i>Amazon S3 User Guide</i>.</p>
    pub fn bucket(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.bucket(input.into());
        self
    }
    /// <p>The name of the bucket that contains the object.</p>
    /// <p><b>Directory buckets</b> - When you use this operation with a directory bucket, you must use virtual-hosted-style requests in the format <code> <i>Bucket_name</i>.s3express-<i>az_id</i>.<i>region</i>.amazonaws.com</code>. Path-style requests are not supported. Directory bucket names must be unique in the chosen Availability Zone. Bucket names must follow the format <code> <i>bucket_base_name</i>--<i>az-id</i>--x-s3</code> (for example, <code> <i>DOC-EXAMPLE-BUCKET</i>--<i>usw2-az1</i>--x-s3</code>). For information about bucket naming restrictions, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/directory-bucket-naming-rules.html">Directory bucket naming rules</a> in the <i>Amazon S3 User Guide</i>.</p>
    /// <p><b>Access points</b> - When you use this action with an access point, you must provide the alias of the access point in place of the bucket name or specify the access point ARN. When using the access point ARN, you must direct requests to the access point hostname. The access point hostname takes the form <i>AccessPointName</i>-<i>AccountId</i>.s3-accesspoint.<i>Region</i>.amazonaws.com. When using this action with an access point through the Amazon Web Services SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html">Using access points</a> in the <i>Amazon S3 User Guide</i>.</p><note>
    /// <p>Access points and Object Lambda access points are not supported by directory buckets.</p>
    /// </note>
    /// <p><b>S3 on Outposts</b> - When you use this action with Amazon S3 on Outposts, you must direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the form <code> <i>AccessPointName</i>-<i>AccountId</i>.<i>outpostID</i>.s3-outposts.<i>Region</i>.amazonaws.com</code>. When you use this action with S3 on Outposts through the Amazon Web Services SDKs, you provide the Outposts access point ARN in place of the bucket name. For more information about S3 on Outposts ARNs, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html">What is S3 on Outposts?</a> in the <i>Amazon S3 User Guide</i>.</p>
    pub fn set_bucket(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_bucket(input);
        self
    }
    /// <p>The name of the bucket that contains the object.</p>
    /// <p><b>Directory buckets</b> - When you use this operation with a directory bucket, you must use virtual-hosted-style requests in the format <code> <i>Bucket_name</i>.s3express-<i>az_id</i>.<i>region</i>.amazonaws.com</code>. Path-style requests are not supported. Directory bucket names must be unique in the chosen Availability Zone. Bucket names must follow the format <code> <i>bucket_base_name</i>--<i>az-id</i>--x-s3</code> (for example, <code> <i>DOC-EXAMPLE-BUCKET</i>--<i>usw2-az1</i>--x-s3</code>). For information about bucket naming restrictions, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/directory-bucket-naming-rules.html">Directory bucket naming rules</a> in the <i>Amazon S3 User Guide</i>.</p>
    /// <p><b>Access points</b> - When you use this action with an access point, you must provide the alias of the access point in place of the bucket name or specify the access point ARN. When using the access point ARN, you must direct requests to the access point hostname. The access point hostname takes the form <i>AccessPointName</i>-<i>AccountId</i>.s3-accesspoint.<i>Region</i>.amazonaws.com. When using this action with an access point through the Amazon Web Services SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/using-access-points.html">Using access points</a> in the <i>Amazon S3 User Guide</i>.</p><note>
    /// <p>Access points and Object Lambda access points are not supported by directory buckets.</p>
    /// </note>
    /// <p><b>S3 on Outposts</b> - When you use this action with Amazon S3 on Outposts, you must direct requests to the S3 on Outposts hostname. The S3 on Outposts hostname takes the form <code> <i>AccessPointName</i>-<i>AccountId</i>.<i>outpostID</i>.s3-outposts.<i>Region</i>.amazonaws.com</code>. When you use this action with S3 on Outposts through the Amazon Web Services SDKs, you provide the Outposts access point ARN in place of the bucket name. For more information about S3 on Outposts ARNs, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/S3onOutposts.html">What is S3 on Outposts?</a> in the <i>Amazon S3 User Guide</i>.</p>
    pub fn get_bucket(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_bucket()
    }
    /// <p>Return the object only if its entity tag (ETag) is the same as the one specified; otherwise, return a 412 (precondition failed) error.</p>
    /// <p>If both of the <code>If-Match</code> and <code>If-Unmodified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-Match</code> condition evaluates to <code>true</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Unmodified-Since</code> condition evaluates to <code>false</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn if_match(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.if_match(input.into());
        self
    }
    /// <p>Return the object only if its entity tag (ETag) is the same as the one specified; otherwise, return a 412 (precondition failed) error.</p>
    /// <p>If both of the <code>If-Match</code> and <code>If-Unmodified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-Match</code> condition evaluates to <code>true</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Unmodified-Since</code> condition evaluates to <code>false</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn set_if_match(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_if_match(input);
        self
    }
    /// <p>Return the object only if its entity tag (ETag) is the same as the one specified; otherwise, return a 412 (precondition failed) error.</p>
    /// <p>If both of the <code>If-Match</code> and <code>If-Unmodified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-Match</code> condition evaluates to <code>true</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Unmodified-Since</code> condition evaluates to <code>false</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn get_if_match(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_if_match()
    }
    /// <p>Return the object only if it has been modified since the specified time; otherwise, return a 304 (not modified) error.</p>
    /// <p>If both of the <code>If-None-Match</code> and <code>If-Modified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-None-Match</code> condition evaluates to <code>false</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Modified-Since</code> condition evaluates to <code>true</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn if_modified_since(mut self, input: ::aws_smithy_types::DateTime) -> Self {
        self.inner = self.inner.if_modified_since(input);
        self
    }
    /// <p>Return the object only if it has been modified since the specified time; otherwise, return a 304 (not modified) error.</p>
    /// <p>If both of the <code>If-None-Match</code> and <code>If-Modified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-None-Match</code> condition evaluates to <code>false</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Modified-Since</code> condition evaluates to <code>true</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn set_if_modified_since(mut self, input: ::std::option::Option<::aws_smithy_types::DateTime>) -> Self {
        self.inner = self.inner.set_if_modified_since(input);
        self
    }
    /// <p>Return the object only if it has been modified since the specified time; otherwise, return a 304 (not modified) error.</p>
    /// <p>If both of the <code>If-None-Match</code> and <code>If-Modified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-None-Match</code> condition evaluates to <code>false</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Modified-Since</code> condition evaluates to <code>true</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn get_if_modified_since(&self) -> &::std::option::Option<::aws_smithy_types::DateTime> {
        self.inner.get_if_modified_since()
    }
    /// <p>Return the object only if its entity tag (ETag) is different from the one specified; otherwise, return a 304 (not modified) error.</p>
    /// <p>If both of the <code>If-None-Match</code> and <code>If-Modified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-None-Match</code> condition evaluates to <code>false</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Modified-Since</code> condition evaluates to <code>true</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn if_none_match(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.if_none_match(input.into());
        self
    }
    /// <p>Return the object only if its entity tag (ETag) is different from the one specified; otherwise, return a 304 (not modified) error.</p>
    /// <p>If both of the <code>If-None-Match</code> and <code>If-Modified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-None-Match</code> condition evaluates to <code>false</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Modified-Since</code> condition evaluates to <code>true</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn set_if_none_match(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_if_none_match(input);
        self
    }
    /// <p>Return the object only if its entity tag (ETag) is different from the one specified; otherwise, return a 304 (not modified) error.</p>
    /// <p>If both of the <code>If-None-Match</code> and <code>If-Modified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-None-Match</code> condition evaluates to <code>false</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Modified-Since</code> condition evaluates to <code>true</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns the <code>304 Not Modified</code> response code.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn get_if_none_match(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_if_none_match()
    }
    /// <p>Return the object only if it has not been modified since the specified time; otherwise, return a 412 (precondition failed) error.</p>
    /// <p>If both of the <code>If-Match</code> and <code>If-Unmodified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-Match</code> condition evaluates to <code>true</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Unmodified-Since</code> condition evaluates to <code>false</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn if_unmodified_since(mut self, input: ::aws_smithy_types::DateTime) -> Self {
        self.inner = self.inner.if_unmodified_since(input);
        self
    }
    /// <p>Return the object only if it has not been modified since the specified time; otherwise, return a 412 (precondition failed) error.</p>
    /// <p>If both of the <code>If-Match</code> and <code>If-Unmodified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-Match</code> condition evaluates to <code>true</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Unmodified-Since</code> condition evaluates to <code>false</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn set_if_unmodified_since(mut self, input: ::std::option::Option<::aws_smithy_types::DateTime>) -> Self {
        self.inner = self.inner.set_if_unmodified_since(input);
        self
    }
    /// <p>Return the object only if it has not been modified since the specified time; otherwise, return a 412 (precondition failed) error.</p>
    /// <p>If both of the <code>If-Match</code> and <code>If-Unmodified-Since</code> headers are present in the request as follows:</p>
    /// <ul>
    /// <li>
    /// <p><code>If-Match</code> condition evaluates to <code>true</code>, and;</p></li>
    /// <li>
    /// <p><code>If-Unmodified-Since</code> condition evaluates to <code>false</code>;</p></li>
    /// </ul>
    /// <p>Then Amazon S3 returns <code>200 OK</code> and the data requested.</p>
    /// <p>For more information about conditional requests, see <a href="https://tools.ietf.org/html/rfc7232">RFC 7232</a>.</p>
    pub fn get_if_unmodified_since(&self) -> &::std::option::Option<::aws_smithy_types::DateTime> {
        self.inner.get_if_unmodified_since()
    }
    /// <p>The object key.</p>
    pub fn key(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.key(input.into());
        self
    }
    /// <p>The object key.</p>
    pub fn set_key(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_key(input);
        self
    }
    /// <p>The object key.</p>
    pub fn get_key(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_key()
    }
    /// <p>HeadObject returns only the metadata for an object. If the Range is satisfiable, only the <code>ContentLength</code> is affected in the response. If the Range is not satisfiable, S3 returns a <code>416 - Requested Range Not Satisfiable</code> error.</p>
    pub fn range(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.range(input.into());
        self
    }
    /// <p>HeadObject returns only the metadata for an object. If the Range is satisfiable, only the <code>ContentLength</code> is affected in the response. If the Range is not satisfiable, S3 returns a <code>416 - Requested Range Not Satisfiable</code> error.</p>
    pub fn set_range(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_range(input);
        self
    }
    /// <p>HeadObject returns only the metadata for an object. If the Range is satisfiable, only the <code>ContentLength</code> is affected in the response. If the Range is not satisfiable, S3 returns a <code>416 - Requested Range Not Satisfiable</code> error.</p>
    pub fn get_range(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_range()
    }
    /// <p>Version ID used to reference a specific version of the object.</p><note>
    /// <p>For directory buckets in this API operation, only the <code>null</code> value of the version ID is supported.</p>
    /// </note>
    pub fn version_id(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.version_id(input.into());
        self
    }
    /// <p>Version ID used to reference a specific version of the object.</p><note>
    /// <p>For directory buckets in this API operation, only the <code>null</code> value of the version ID is supported.</p>
    /// </note>
    pub fn set_version_id(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_version_id(input);
        self
    }
    /// <p>Version ID used to reference a specific version of the object.</p><note>
    /// <p>For directory buckets in this API operation, only the <code>null</code> value of the version ID is supported.</p>
    /// </note>
    pub fn get_version_id(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_version_id()
    }
    /// <p>Specifies the algorithm to use when encrypting the object (for example, AES256).</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn sse_customer_algorithm(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.sse_customer_algorithm(input.into());
        self
    }
    /// <p>Specifies the algorithm to use when encrypting the object (for example, AES256).</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn set_sse_customer_algorithm(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_sse_customer_algorithm(input);
        self
    }
    /// <p>Specifies the algorithm to use when encrypting the object (for example, AES256).</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn get_sse_customer_algorithm(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_sse_customer_algorithm()
    }
    /// <p>Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the <code>x-amz-server-side-encryption-customer-algorithm</code> header.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn sse_customer_key(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.sse_customer_key(input.into());
        self
    }
    /// <p>Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the <code>x-amz-server-side-encryption-customer-algorithm</code> header.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn set_sse_customer_key(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_sse_customer_key(input);
        self
    }
    /// <p>Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon S3 does not store the encryption key. The key must be appropriate for use with the algorithm specified in the <code>x-amz-server-side-encryption-customer-algorithm</code> header.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn get_sse_customer_key(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_sse_customer_key()
    }
    /// <p>Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn sse_customer_key_md5(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.sse_customer_key_md5(input.into());
        self
    }
    /// <p>Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn set_sse_customer_key_md5(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_sse_customer_key_md5(input);
        self
    }
    /// <p>Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure that the encryption key was transmitted without error.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn get_sse_customer_key_md5(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_sse_customer_key_md5()
    }
    /// <p>Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. If either the source or destination S3 bucket has Requester Pays enabled, the requester will pay for corresponding charges to copy the object. For information about downloading objects from Requester Pays buckets, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html">Downloading Objects in Requester Pays Buckets</a> in the <i>Amazon S3 User Guide</i>.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn request_payer(mut self, input: crate::types::RequestPayer) -> Self {
        self.inner = self.inner.request_payer(input);
        self
    }
    /// <p>Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. If either the source or destination S3 bucket has Requester Pays enabled, the requester will pay for corresponding charges to copy the object. For information about downloading objects from Requester Pays buckets, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html">Downloading Objects in Requester Pays Buckets</a> in the <i>Amazon S3 User Guide</i>.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn set_request_payer(mut self, input: ::std::option::Option<crate::types::RequestPayer>) -> Self {
        self.inner = self.inner.set_request_payer(input);
        self
    }
    /// <p>Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. If either the source or destination S3 bucket has Requester Pays enabled, the requester will pay for corresponding charges to copy the object. For information about downloading objects from Requester Pays buckets, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html">Downloading Objects in Requester Pays Buckets</a> in the <i>Amazon S3 User Guide</i>.</p><note>
    /// <p>This functionality is not supported for directory buckets.</p>
    /// </note>
    pub fn get_request_payer(&self) -> &::std::option::Option<crate::types::RequestPayer> {
        self.inner.get_request_payer()
    }
    /// <p>Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' HEAD request for the part specified. Useful querying about the size of the part and the number of parts in this object.</p>
    pub fn part_number(mut self, input: i32) -> Self {
        self.inner = self.inner.part_number(input);
        self
    }
    /// <p>Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' HEAD request for the part specified. Useful querying about the size of the part and the number of parts in this object.</p>
    pub fn set_part_number(mut self, input: ::std::option::Option<i32>) -> Self {
        self.inner = self.inner.set_part_number(input);
        self
    }
    /// <p>Part number of the object being read. This is a positive integer between 1 and 10,000. Effectively performs a 'ranged' HEAD request for the part specified. Useful querying about the size of the part and the number of parts in this object.</p>
    pub fn get_part_number(&self) -> &::std::option::Option<i32> {
        self.inner.get_part_number()
    }
    /// <p>The account ID of the expected bucket owner. If the account ID that you provide does not match the actual owner of the bucket, the request fails with the HTTP status code <code>403 Forbidden</code> (access denied).</p>
    pub fn expected_bucket_owner(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.inner = self.inner.expected_bucket_owner(input.into());
        self
    }
    /// <p>The account ID of the expected bucket owner. If the account ID that you provide does not match the actual owner of the bucket, the request fails with the HTTP status code <code>403 Forbidden</code> (access denied).</p>
    pub fn set_expected_bucket_owner(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.inner = self.inner.set_expected_bucket_owner(input);
        self
    }
    /// <p>The account ID of the expected bucket owner. If the account ID that you provide does not match the actual owner of the bucket, the request fails with the HTTP status code <code>403 Forbidden</code> (access denied).</p>
    pub fn get_expected_bucket_owner(&self) -> &::std::option::Option<::std::string::String> {
        self.inner.get_expected_bucket_owner()
    }
    /// <p>To retrieve the checksum, this parameter must be enabled.</p>
    /// <p>In addition, if you enable <code>ChecksumMode</code> and the object is encrypted with Amazon Web Services Key Management Service (Amazon Web Services KMS), you must have permission to use the <code>kms:Decrypt</code> action for the request to succeed.</p>
    pub fn checksum_mode(mut self, input: crate::types::ChecksumMode) -> Self {
        self.inner = self.inner.checksum_mode(input);
        self
    }
    /// <p>To retrieve the checksum, this parameter must be enabled.</p>
    /// <p>In addition, if you enable <code>ChecksumMode</code> and the object is encrypted with Amazon Web Services Key Management Service (Amazon Web Services KMS), you must have permission to use the <code>kms:Decrypt</code> action for the request to succeed.</p>
    pub fn set_checksum_mode(mut self, input: ::std::option::Option<crate::types::ChecksumMode>) -> Self {
        self.inner = self.inner.set_checksum_mode(input);
        self
    }
    /// <p>To retrieve the checksum, this parameter must be enabled.</p>
    /// <p>In addition, if you enable <code>ChecksumMode</code> and the object is encrypted with Amazon Web Services Key Management Service (Amazon Web Services KMS), you must have permission to use the <code>kms:Decrypt</code> action for the request to succeed.</p>
    pub fn get_checksum_mode(&self) -> &::std::option::Option<crate::types::ChecksumMode> {
        self.inner.get_checksum_mode()
    }
}

impl crate::client::customize::internal::CustomizablePresigned<crate::operation::head_object::HeadObjectError> for HeadObjectFluentBuilder {
    fn presign(
        self,
        config_override: crate::config::Builder,
        presigning_config: crate::presigning::PresigningConfig,
    ) -> crate::client::customize::internal::BoxFuture<
        crate::client::customize::internal::SendResult<crate::presigning::PresignedRequest, crate::operation::head_object::HeadObjectError>,
    > {
        ::std::boxed::Box::pin(async move { self.config_override(config_override).presigned(presigning_config).await })
    }
}