UpdateEndpoint adds the middleware to the middleware stack based on the UpdateEndpointOptions.

BackfillInput validates and backfill's values from ARN into request serializable input.

UpdateEndpointOptions provides the options for the UpdateEndpoint middleware setup.

UpdateEndpointParameterAccessor represents accessor functions used by the middleware.

EndpointResolver interface for resolving service endpoints.

EndpointResolverOptions is the service endpoint resolver options.