Inappropriate function docstrings

There are inappropriate docstrings for the below functions.

1. keystoneclient/service_catalog.py

        def get_urls(self, attr=None, filter_value=None,
                 service_type='identity', endpoint_type='publicURL'):
        """Fetch endpoint urls from the service catalog.

        Fetch the endpoints from the service catalog for a particular
        endpoint attribute. If no attribute is given, return the first
        endpoint of the specified type.

        :param string attr: Endpoint attribute name.
        :param string filter_value: Endpoint attribute value.
        :param string service_type: Service type of the endpoint.
        :param string endpoint_type: Type of endpoint.
                                     Possible values: public or publicURL,
                                         internal or internalURL,
                                         admin or adminURL
        :param string region_name: Region of the endpoint. --> NOT NEEDED

        :returns: tuple of urls or None (if no match found)
        """

2. keystoneclient//openstack/common/strutils.py

    def safe_encode(text, incoming=None,
                encoding='utf-8', errors='strict'):
    """Encodes incoming str/unicode using `encoding`.

    If incoming is not specified, text is expected to be encoded with
    current python's default encoding. (`sys.getdefaultencoding`)

    :param incoming: Text's current encoding
    :param encoding: Expected encoding for text (Default UTF-8)
    :param errors: Errors handling policy. See here for valid
        values http://docs.python.org/2/library/codecs.html
    :returns: text or a bytestring `encoding` encoded -- MISSING INFO FOR PARAMETER "text"
                representation of it.
    :raises TypeError: If text is not an isntance of str
    """
3. Similarly for func "def safe_decode"