Execute a function

        .. code-block:: python

            >>> wheel.cmd('key.finger', ['jerry'])
            {'minions': {'jerry': '5d:f6:79:43:5e:d4:42:3f:57:b8:45:a8:7e:a4:6e:ca'}}

def cmd(self, fun, arg=None, pub_data=None, kwarg=None, print_event=True, full_return=False):
        '''
        Execute a function

        .. code-block:: python

            >>> wheel.cmd('key.finger', ['jerry'])
            {'minions': {'jerry': '5d:f6:79:43:5e:d4:42:3f:57:b8:45:a8:7e:a4:6e:ca'}}
        '''
        return super(WheelClient, self).cmd(fun,
                                            arg,
                                            pub_data,
                                            kwarg,
                                            print_event,
                                            full_return)