code: def _route53_op(body=None, **kw):
      
      op = _Operation(service=b"route53", **kw)
      if body is None:
          return succeed(op)
      d = to_xml(body)
      d.addCallback(lambda body: attr.assoc(op, body=body))
      return d
docs: Construct an L{_Operation} representing a I{Route53} service API call.