@property<EOL><INDENT>def sip(self):<DEDENT>
if self._sip is None:<EOL><INDENT>self._sip = SipList(self._version, account_sid=self._solution['<STR_LIT>'], )<EOL><DEDENT>return self._sip<EOL>
Access the sip

:returns: twilio.rest.api.v2010.account.sip.SipList
:rtype: twilio.rest.api.v2010.account.sip.SipList