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