def METHOD_NAME(self, pfn):
    """
    _createFinalPFN_
    GFAL2 requires file:/// for any direction transfers
    """
    if pfn.startswith('file:'):
        return pfn
    elif os.path.isfile(pfn):
        return "file://%s" % os.path.abspath(pfn)
    elif pfn.startswith('/'):
        return "file://%s" % os.path.abspath(pfn)
    return pfn