private FileReference createFileReference(String value) {
        try {
            Constructor<FileReference> constructors = FileReference.class.getDeclaredConstructor(String.class);
            constructors.setAccessible(true);
            return constructors.newInstance(value);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
Test of public API of MockFileAcquirer, since it is intended to be used by 3rd parties.
Do not place it in the same package as MockFileAcquirer.
@author Tony Vaagenes
fileacquirer/src/test/java/MockFileAcquirerTest.java