docs: public long getLastModified()
          throws IOException
      {
          if ( !error )
          {
              try
              {
                  return delegateEntry.getLastModified();
              }
              catch ( IOException e )
              {
                  error = true;
                  return generatorEntry.getLastModified();
              }
          }
          else
          {
              return generatorEntry.getLastModified();
          }
      }