public void validate() throws org.apache.thrift.TException {
      // check for required fields
      // check for sub-struct validity
    }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
agent-module/plugins-it/thrift-it/thrift-0-14-it/src/test/java/com/navercorp/pinpoint/it/plugin/thrift/dto/EchoService.java