code: @Override
      public int compareTo( AppIdNamespace other ) {
          int appidCompare = appId.compareTo( other.appId );
          if ( appidCompare == 0 ) {
              return namespace.compareTo( other.namespace );
          }
          return appidCompare;
      }
docs: Perform a "lexical" comparison to {@code other} {@link AppIdNamespace}.
  
  @return See {@link String#compareTo(String)}.