List builds tagged with a tag.

        Calls "listTagged" XML-RPC.

        :returns: deferred that when fired returns a list of Build objects.

def listTagged(self, *args, **kwargs):
        """
        List builds tagged with a tag.

        Calls "listTagged" XML-RPC.

        :returns: deferred that when fired returns a list of Build objects.
        """
        data = yield self.call('listTagged', *args, **kwargs)
        builds = []
        for bdata in data:
            build = Build.fromDict(bdata)
            build.connection = self
            builds.append(build)
        defer.returnValue(builds)