func: static void qmp_input_pop(Visitor *v, void **obj)
  
  {
  
      QmpInputVisitor *qiv = to_qiv(v);
  
      StackObject *tos = QSLIST_FIRST(&qiv->stack);
  
  
  
      assert(tos && tos->qapi == obj);
  
      QSLIST_REMOVE_HEAD(&qiv->stack, node);
  
      qmp_input_stack_object_free(tos);
  
  }
  