code: def experiment(name)
        id = name.to_s.downcase.gsub(/\W/, "_").to_sym
        Vanity.logger.warn("Deprecated: Please call experiment method with experiment identifier (a Ruby symbol)") unless id == name
        experiments[id.to_sym] or raise NoExperimentError, "No experiment #{id}"
      end
docs: Returns the experiment. You may not have guessed, but this method raises
   an exception if it cannot load the experiment's definition.
  
   @see Vanity::Experiment
   @deprecated