'Returns a dict of prepped values contained in an RDN
:param rdn:
A RelativeDistinguishedName object
:return:
A dict object with unicode strings of NameTypeAndValue value field
values that have been prepped for comparison'

def _get_values(self, rdn):

    output = {}
    [output.update([(ntv[u'type'].native, ntv.prepped_value)]) for ntv in rdn]
    return output
