'Creates a new Channel.
:param name: name of the Channel
:param description: description of the Channel
:param mode: mode of the Channel (\'open\', \'semi-open\', or \'closed\')
:return: a channel ID
:raises a DuplicateChannelNameError if name already exists'

def create_channel(self, name, description, mode=u'closed'):

    return self.lm.channel_manager.create_channel(name, description, mode)
