Eager Load Aws::Structure and Aws::EmptyStructure
Eager Load Aws::Structure and Aws::EmptyStructure

If we do not do this, the first loaded API shape which is empty will be
globally used to represent empty structures. This is not ideal.

With this change, empty API response shapes will return as
`Aws::EmptyStructure`.

aws/aws-sdk-ruby,hamadata/aws-sdk-ruby,llooker/aws-sdk-ruby,aws/aws-sdk-ruby,aws/aws-sdk-ruby,hamadata/aws-sdk-ruby,cjyclaire/aws-sdk-ruby,llooker/aws-sdk-ruby,cjyclaire/aws-sdk-ruby,hamadata/aws-sdk-ruby,llooker/aws-sdk-ruby,cjyclaire/aws-sdk-ruby