code: @CallMethod(pattern = "install/version/description")
      public void appendDescription(@CallParam(pattern = "install/version/description") final String _desc)
      {
          if (_desc != null) {
              this.description.append(_desc.trim()).append("\n");
          }
      }
docs: Append a description for this version.
  
  @param _desc text of description to append
  @see #description