Set at the same time as endpointV2.
The current auth configuration that has been set by any auth middleware and that will prevent from being set more than once.
Used by DynamoDbDocumentClient.
Resolved by the endpointMiddleware function of @aws-sdk/middleware-endpoint in the serialization stage.
A logger that may be invoked by any handler during execution of an operation.
Additional user agent that inferred by middleware. It can be used to save
the internal user agent sections without overriding the customUserAgent
config in clients.
Data and helper objects that are not expected to change from one execution of a composed handler to another.