private static @Nullable LineRange createRange(@NotNull Document document, @NotNull PsiElement startElement, @NotNull PsiElement endElement) {
    CharSequence text = document.getImmutableCharSequence();
    int startOffset = startElement.getTextRange().getStartOffset();
    int startLine = document.getLineNumber(startOffset);
    if (!CharArrayUtil.isEmptyOrSpaces(text, document.getLineStartOffset(startLine), startOffset)) {
      return null;
    }
    int endOffset = endElement.getTextRange().getEndOffset();
    int endLine = document.getLineNumber(endOffset);
    if (!CharArrayUtil.isEmptyOrSpaces(text, endOffset, document.getLineEndOffset(endLine))) {
      return null;
    }
    return new LineRange(startLine, endLine + 1);
  }
private static @Nullable LineRange createRange(@NotNull Document document, @NotNull PsiElement startElement, @NotNull PsiElement endElement)