'Hook method. How the channel should prefix itself for users.
Args:
msg (str, optional): Prefix text
emit (bool, optional): Switches to emit mode, which usually
means to not prefix the channel\'s info.
Returns:
prefix (str): The created channel prefix.'

def channel_prefix(self, msg=None, emit=False):

    return ('' if emit else ('[%s]    ' % self.key))
