Initializes the Application ui file.

def _initialize_applicationUiFile():
    """
    Initializes the Application ui file.
    """

    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))