code: def _normalize_http_methods(http_method):
          
  
          if http_method.upper() == 'ANY':
              for method in SamApiProvider._ANY_HTTP_METHODS:
                  yield method.upper()
          else:
              yield http_method.upper()
docs: Normalizes Http Methods. Api Gateway allows a Http Methods of ANY. This is a special verb to denote all
          supported Http Methods on Api Gateway.
  
          :param str http_method: Http method
          :yield str: Either the input http_method or one of the _ANY_HTTP_METHODS (normalized Http Methods)