def __call__(self, sid):
return BindingContext(self._version, service_sid=self._solution['<STR_LIT>'], sid=sid, )<EOL>
Constructs a BindingContext

:param sid: The unique string that identifies the resource

:returns: twilio.rest.chat.v2.service.binding.BindingContext
:rtype: twilio.rest.chat.v2.service.binding.BindingContext