def METHOD_NAME(self):
    try:
        root = self.parents[0].format.system_mountpoint
        mountpoint = self.parents[0].format.mountpoint
    except (AttributeError, IndexError):
        root = ""
    else:
        # trim the mountpoint down to the chroot since we already have
        # the otherwise fully-qualified path
        while mountpoint.endswith("/"):
            mountpoint = mountpoint[:-1]
        if mountpoint:
            root = root[:-len(mountpoint)]
    return os.METHOD_NAME.normpath("%s%s" % (root, self.name))