code: def bot
        return @bot unless @bot.nil?
  
        @bot_command = nil
        
        #
        # parse any command-line options and use them to initialize the bot
        #
        params = {}
  
        #:nocov:
        opts = OptionParser.new
  
        opts.banner = "Usage: #{File.basename($0)} [options]"
  
        opts.separator ""
        opts.separator "Specific options:"
  
  
        opts.on('-c', '--config [ARG]', "Specify a config file to use")    { |c| ENV["chatterbot_config"] = c }
        opts.on('-t', '--test', "Run the bot without actually sending any tweets") { params[:debug_mode] = true }
        opts.on('-v', '--verbose', "verbose output to stdout")    { params[:verbose] = true }
        opts.on('--dry-run', "Run the bot in test mode, and also don't update the database")    { params[:debug_mode] = true ; params[:no_update] = true }
  
        opts.on('-r', '--reset', "Reset your bot to ignore old tweets") {
          @bot_command = :reset_since_id_counters
        }
  
        opts.on('--profile [ARG]', "get/set your bot's profile text") { |p| 
          @bot_command = :profile_text
          @bot_command_args = [ p ]
        }
  
        opts.on('--website [ARG]', "get/set your bot's profile URL") { |u| 
          @bot_command = :profile_website
          @bot_command_args = [ u ]
        }
        
        opts.on_tail("-h", "--help", "Show this message") do
          puts opts
          exit
        end
  
        opts.parse!(ARGV)
        #:nocov:
  
        @bot = Chatterbot::Bot.new(params)
        if @bot_command != nil
          @bot.skip_run = true
          result = @bot.send(@bot_command, *@bot_command_args)
          puts result
        end
  
        @bot
      end
docs: generate a Bot object. if the DSL is being called from a Bot object, just return it
   otherwise create a bot and return that