code: def sync_one(self, aws_syncr, amazon, gateway):
          
          gateway_info = amazon.apigateway.gateway_info(gateway.name, gateway.location)
          if not gateway_info:
              amazon.apigateway.create_gateway(gateway.name, gateway.location, gateway.stages, gateway.resources, gateway.api_keys, gateway.domain_names)
          else:
              amazon.apigateway.modify_gateway(gateway_info, gateway.name, gateway.location, gateway.stages, gateway.resources, gateway.api_keys, gateway.domain_names)
docs: Make sure this gateway exists and has only attributes we want it to have