'Make a Lookup RPC call.
Args:
request: a LookupRequest instance.
rpc: Optional RPC instance to use for the call.
callback: Optional final callback. Will be called as
callback(rpc, result) when the rpc completes. If None, the
call is synchronous.
response: Optional ProtocolMessage to be filled in with response.
Returns:
The LookupResponse if callback is None. Otherwise, returns None.'

def Lookup(self, request, rpc=None, callback=None, response=None):

    if (response is None):
        response = LookupResponse
    return self._MakeCall(rpc, self._full_name_Lookup, 'Lookup', request, response, callback, self._protorpc_Lookup, package_name='apphosting.datastore.v4')
