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