Internal
A client protocol defines how to convert a message (e.g. HTTP request/response) to and from a data object.
use $ClientProtocol
the payload codec if the requests/responses have a symmetric format. It otherwise may return null.
the Smithy qualified shape id.
A client protocol defines how to convert a message (e.g. HTTP request/response) to and from a data object.
Deprecated
use $ClientProtocol