(self, event)
Abstract method to handle a `CommandStartedEvent`.

        :Parameters:
          - `event`: An instance of :class:`CommandStartedEvent`.
Abstract method to handle a `CommandStartedEvent`.
Abstract method to handle a CommandStartedEvent .
def started(self, event):
        """Abstract method to handle a `CommandStartedEvent`.

        :Parameters:
          - `event`: An instance of :class:`CommandStartedEvent`.
        """
        raise NotImplementedError
def started ( self , event ) : raise NotImplementedError