# File lib/autumn/leaf.rb, line 559
    def commands_command(stem, sender, reply_to, msg)
      commands = self.class.instance_methods.select { |m| m =~ /^\w+_command$/ }
      commands.map! { |m| m.match(/^(\w+)_command$/)[1] }
      commands.reject! { |m| UNADVERTISED_COMMANDS.include? m }
      return if commands.empty?
      commands.map! { |c| "#{options[:command_prefix]}#{c}" }
      "Commands for #{leaf_name}: #{commands.sort.join(', ')}"
    end