Internalrequest to sign
identity to sing the request with
property bag for signing
signed request in a promise
InternalHandler that executes after the HttpSigner.sign invocation and corresponding
middleware throws an error.
The error handler is expected to throw the error it receives, so the return type of the error handler is never.
InternalHandler that executes after the HttpSigner.sign invocation and corresponding middleware succeeds.
Signs an HttpRequest with an identity and signing properties.