'Creates a copy of this request context with the same request object.
This can be used to move a request context to a different greenlet.
Because the actual request object is the same this cannot be used to
move a request context to a different thread unless access to the
request object is locked.
.. versionadded:: 0.10'

def copy(self):

    return self.__class__(self.app, environ=self.request.environ, request=self.request)
