def voice_state_for(self, user):
return self._voice_states.get(user.id)<EOL>
Retrieves the :class:`VoiceState` for a specified :class:`User`.

        If the :class:`User` has no voice state then this function returns
        ``None``.

        Parameters
        ------------
        user: :class:`User`
            The user to retrieve the voice state for.

        Returns
        --------
        Optional[:class:`VoiceState`]
            The voice state associated with this user.