'Returns the sub schema sub entry\'s data'

def read_subschemasubentry_s(self, subschemasubentry_dn, attrs=None):

    attrs = (attrs or SCHEMA_ATTRS)
    try:
        r = self.search_s(subschemasubentry_dn, ldap.SCOPE_BASE, '(objectClass=subschema)', attrs)
    except ldap.NO_SUCH_OBJECT:
        return None
    else:
        if r:
            return r[0][1]
        else:
            return None
