public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case MESSAGE:
      if (value == null) {
        unsetMessage();
      } else {
        setMessage((java.lang.String)value);
      }
      break;

    }
  }
Returns true if field message is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/generated/IllegalArgument.java