public static void loadPropertiesFile(final String filenameOrUrl)
    {
        loadPropertiesFile(PropertyAction.REPLACE, filenameOrUrl);
    }
@Test
    void shouldDoNothingToSystemPropsWhenLoadingFileWhichDoesNotExist()
    {
        final int originalSystemPropSize = System.getProperties().size();

        loadPropertiesFile("$unknown-file$");
        assertEquals(originalSystemPropSize, System.getProperties().size());
    }