Function rdkafka_sys::bindings::rd_kafka_header_add

pub unsafe extern "C" fn rd_kafka_header_add(
    hdrs: *mut rd_kafka_headers_t,
    name: *const c_char,
    name_size: isize,
    value: *const c_void,
    value_size: isize,
) -> rd_kafka_resp_err_t