'Generate an instance context for the instance, the context is capable of
performing various actions.  All instance actions are proxied to the context
:returns: DocumentPermissionContext for this DocumentPermissionInstance
:rtype: twilio.rest.sync.v1.service.document.document_permission.DocumentPermissionContext'

@property
def _proxy(self):

    if (self._context is None):
        self._context = DocumentPermissionContext(self._version, service_sid=self._solution['service_sid'], document_sid=self._solution['document_sid'], identity=self._solution['identity'])
    return self._context
