code: def get_instance(self, payload):
          
          return ExecutionContextInstance(
              self._version,
              payload,
              flow_sid=self._solution['flow_sid'],
              execution_sid=self._solution['execution_sid'],
          )
docs: Build an instance of ExecutionContextInstance
  
          :param dict payload: Payload response from the API
  
          :returns: twilio.rest.studio.v1.flow.execution.execution_context.ExecutionContextInstance
          :rtype: twilio.rest.studio.v1.flow.execution.execution_context.ExecutionContextInstance