code: def get_instance(self, payload):
          
          return DocumentPermissionInstance(
              self._version,
              payload,
              service_sid=self._solution['service_sid'],
              document_sid=self._solution['document_sid'],
          )
docs: Build an instance of DocumentPermissionInstance
  
          :param dict payload: Payload response from the API
  
          :returns: twilio.rest.sync.v1.service.document.document_permission.DocumentPermissionInstance
          :rtype: twilio.rest.sync.v1.service.document.document_permission.DocumentPermissionInstance