code: def _initialize_applicationUiFile():
      
  
      RuntimeGlobals.ui_file = umbra.ui.common.get_resource_path(UiConstants.ui_file)
      if not foundations.common.path_exists(RuntimeGlobals.ui_file):
          raise foundations.exceptions.FileExistsError("'{0}' ui file is not available, {1} will now close!".format(
              UiConstants.ui_file, Constants.application_name))
docs: Initializes the Application ui file.