docs: function analyze (fileSourceData) {
      var analysis = new Analysis();
          
      for (let sample of fileSourceData) {
          if (saysHelloWorld(sample.text)) {
              analysis.addError({
                  line: sample.line,
                  message: 'At least try to look like you didn\'t copy the demo code!'
              });
          }
      }
  
      return analysis;
  }