'Get a description for a single group.  If more than one
group matches (\'group\' is a pattern), return the first.  If no
group matches, return an empty string.
This elides the response code from the server, since it can
only be \'215\' or \'285\' (for xgtitle) anyway.  If the response
code is needed, use the \'descriptions\' method.
NOTE: This neither checks for a wildcard in \'group\' nor does
it check whether the group actually exists.'

def description(self, group):

    (resp, lines) = self.descriptions(group)
    if (len(lines) == 0):
        return ''
    else:
        return lines[0][1]
