fn token_credential() -> Arc<dyn TokenCredential> ⓘExpand description
Returns the token credential to use when the blob URL carries no SAS token.
Prefers RefreshingWorkloadIdentityCredential when its environment
variables are present, because the workload identity credential in
azure_identity can hold a stale rotated token file. Otherwise falls
back to the ChainedCredential::default_chain, whose credential types
(e.g. managed identity via IMDS) refresh correctly.