@Override
  public java.lang.String toString() {
    java.lang.StringBuilder sb = new java.lang.StringBuilder("Graph(");
    boolean first = true;

    sb.append("nodeType:");
    if (this.nodeType == null) {
      sb.append("null");
    } else {
      sb.append(this.nodeType);
    }
    first = false;
    if (!first) sb.append(", ");
    sb.append("roots:");
    if (this.roots == null) {
      sb.append("null");
    } else {
      sb.append(this.roots);
    }
    first = false;
    if (!first) sb.append(", ");
    sb.append("adjacencyList:");
    if (this.adjacencyList == null) {
      sb.append("null");
    } else {
      sb.append(this.adjacencyList);
    }
    first = false;
    sb.append(")");
    return sb.toString();
  }
Returns true if field corresponding to fieldID 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