code: @Override
      public String getMessage() {
  
          final StringBuilder builder = new StringBuilder();
          for (final String current : errorMessages) {
              builder.append(current).append("\n");
          }
  
          // All done.
          return builder.toString();
      }
docs: Returns the detail message string of this throwable.
  
  @return the detail message string of this <tt>Throwable</tt> instance (which may be <tt>null</tt>).