@Override
      public void write(org.apache.thrift.protocol.TProtocol prot, echo_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TTupleProtocol oprot = (org.apache.thrift.protocol.TTupleProtocol) prot;
        java.util.BitSet optionals = new java.util.BitSet();
        if (struct.isSetMessage()) {
          optionals.set(0);
        }
        oprot.writeBitSet(optionals, 1);
        if (struct.isSetMessage()) {
          oprot.writeString(struct.message);
        }
      }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
agent-module/plugins-it/thrift-it/thrift-0-10-it/src/test/java/com/navercorp/pinpoint/it/plugin/thrift/dto/EchoService.java