int getMaxTextWidthInLineRange(int startVisualLine, int endVisualLine) {
    myEditor.getSoftWrapModel().prepareToMapping();
    int maxWidth = 0;
    VisualLinesIterator iterator = new VisualLinesIterator(myEditor, startVisualLine);
    while (!iterator.atEnd() && iterator.getVisualLine() <= endVisualLine) {
      int width = mySizeManager.getVisualLineWidth(iterator, false);
      maxWidth = Math.max(maxWidth, width);
      iterator.advance();
    }
    return maxWidth;
  }
int getMaxTextWidthInLineRange(int startVisualLine, int endVisualLine)