@org.apache.thrift.annotation.Nullable
  public java.lang.Object getFieldValue(_Fields field) {
    switch (field) {
    case USERNAME:
      return getUsername();

    case SCOPE:
      return getScope();

    case ACTIONS:
      return getActions();

    case TABLE_NAME:
      return getTableName();

    case NS_NAME:
      return getNsName();

    }
    throw new java.lang.IllegalStateException();
  }
Returns true if field nsName is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/generated/TAccessControlEntity.java