public void addToStageList(Stage elem) {
    if (this.stageList == null) {
      this.stageList = new java.util.ArrayList<Stage>();
    }
    this.stageList.add(elem);
  }
Returns true if field stageGraph is set (has been assigned a value) and false otherwise
ql/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/ql/plan/api/Query.java