public void addToField3(InnerStruct elem) {
    if (this.field3 == null) {
      this.field3 = new java.util.ArrayList<InnerStruct>();
    }
    this.field3.add(elem);
  }
Returns true if field field2 is set (has been assigned a value) and false otherwise
serde/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/serde/test/ThriftTestObj.java