private int getNonEmptyLineAfter(int line) {
      CharSequence docChars = myDocument.getCharsSequence();
      for (int lineAfter = line + 1; lineAfter < myDocument.getLineCount(); lineAfter ++) {
        if (!containsWhitespacesOnly(docChars, myDocument.getLineStartOffset(lineAfter), myDocument.getLineEndOffset(lineAfter))) {
          return lineAfter;
        }
      }
      return -1;
    }
private int getNonEmptyLineAfter(int line)