You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: base_guesser.rb
    path of file: ./repos/jets/lib/jets/commands/call
    
    the code of the file until where you have to start completion: # Subclasses of BaseGuessor must implement interface:
#   dete
    
    def class_name
      return @class_name if @detection_ran

      @class_name = detect_class_name
      @detection_ran = true
      @class_name
    end