'Returns some of the more important attributes of self.
Used for testing and debugging purposes.
The attributes are (fa, fd, D, T, Tfuncs, backsubs,
exts, extargs).'

@property
def _important_attrs(self):

    return (self.fa, self.fd, self.D, self.T, self.Tfuncs, self.backsubs, self.exts, self.extargs)
