def dispatchCommand(self, box):
        cmd = box[COMMAND]
        responder = self.locator.locateResponder(cmd)
        if responder is None:
            return fail(RemoteAmpError(
                    UNHANDLED_ERROR_CODE,
                    "Unhandled Command: %r" % (cmd,),
                    False,
                    local=Failure(UnhandledCommand())))
        return maybeDeferred(responder, box)
A box with a _command key was received.
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/protocols/amp.py/BoxDispatcher.dispatchCommand