code: @SuppressWarnings("unchecked")
  	public List<Difference> compare() {
  		Diff diff = new Diff(this.controlDOM, this.testDOM);
  		DetailedDiff detDiff = new DetailedDiff(diff);
  		return detDiff.getAllDifferences();
  	}
docs: Compare the controlDOM and testDOM and save and return the differences in a list.
  
  @return list with differences