// TODO: adjust color from inner fragments - configurable
  public SimpleDiffChange(@NotNull SimpleDiffViewer viewer, @NotNull LineFragment fragment) {
    myViewer = viewer;

    myFragment = fragment;
    myInnerFragments = fragment.getInnerFragments();

    installHighlighter();
  }
 private static String lineDiff(String actual, String expected) {
   List<LineFragment> fragments =
       myComparisonManager.compareLines(actual, expected, ComparisonPolicy.DEFAULT, INDICATOR);
   if (fragments.isEmpty()) {
     return "";
   }
   StringBuilder diff = new StringBuilder();
   diff.append("\n");
   for (LineFragment fragment : fragments) {
     diff.append(String.format("Expected in line: %s >>>\n", fragment.getStartLine2()));
     diff.append(expected.substring(fragment.getStartOffset2(), fragment.getEndOffset2()));
     diff.append("Actual: >>>\n");
     diff.append(actual.substring(fragment.getStartOffset1(), fragment.getEndOffset1()));
     diff.append(">>>\n\n");
   }
   return diff.toString();
 }