Handles the bot's ignore lists.

        To use these commands, you must have the Bot Admin role or have
        Manage Channels permissions. These commands are not allowed to be used
        in a private message context.

        Users with Manage Roles or Bot Admin role can still invoke the bot
        in ignored channels.

async def ignore(self, ctx):
        """Handles the bot's ignore lists.

        To use these commands, you must have the Bot Admin role or have
        Manage Channels permissions. These commands are not allowed to be used
        in a private message context.

        Users with Manage Roles or Bot Admin role can still invoke the bot
        in ignored channels.
        """
        if ctx.invoked_subcommand is None:
            await self.bot.say('Invalid subcommand passed: {0.subcommand_passed}'.format(ctx))