@property<EOL><INDENT>def voice(self):<DEDENT>
if self._voice is None:<EOL><INDENT>from twilio.rest.voice import Voice<EOL>self._voice = Voice(self)<EOL><DEDENT>return self._voice<EOL>
Access the Voice Twilio Domain

:returns: Voice Twilio Domain
:rtype: twilio.rest.voice.Voice