protected @NonNls @NotNull String getConfigurationFactoryId() {
    PluginException.reportDeprecatedDefault(
      getClass(), "getConfigurationFactoryId",
      "The default implementation delegates to 'ProjectSystemId::getReadableName' which is supposed to be localized," +
      " but return value of this method must not be localized.");
    return myExternalSystemId.getReadableName();
  }
protected @NonNls @NotNull String getConfigurationFactoryId()