# File lib/launchy/detect/ruby_engine.rb, line 11
    def self.detect( ruby_engine = RubyEngine.new )
      found = find_child( :is_current_engine?, ruby_engine.to_s )
      return found if found
      raise NotFoundError, "#{ruby_engine_error_message( ruby_engine )} #{Launchy.bug_report_message}"
    end