def METHOD_NAME(self, *args, **kwargs):
    """
    Creates ChannelNode and build topic tree
    Args:
      - args: arguments passed in on the command line
      - kwargs: extra options passed in as key="value" pairs on the command line
        For example, add the command line option   lang="fr"  and the value
        "fr" will be passed along to `construct_channel` as kwargs['lang'].
    Returns: ChannelNode
    """
    channel = self.get_channel(*args, **kwargs)  # Create ChannelNode from data in self.channel_info
    # TODO: Replace next line with chef code
    raise NotImplementedError("constuct_channel method not implemented yet...")
    return channel