public static ApplicationBuilder createFromFile(String fileName) throws IOException, ParseException {
        return createFromFile(fileName, new BaseDeployLogger());
    }
Convenience factory method to import and build a {@link Schema} object from a file. Only for testing.

@param fileName the file to build from
@return the built {@link ApplicationBuilder} object
@throws IOException    if there was a problem reading the file.
@throws ParseException if there was a problem parsing the file content.
config-model/src/main/java/com/yahoo/schema/ApplicationBuilder.java