private @NotNull TextRange getRangeWithSiblings(@NotNull ASTNode astNode) {
    Ref<TextRange> result = Ref.create(astNode.getTextRange());
    IElementType elementType = astNode.getElementType();
    ASTNode sibling = astNode.getTreePrev();
    while (sibling != null && processSibling(sibling, result, elementType)) {
      sibling = sibling.getTreePrev();
    }
    sibling = astNode.getTreeNext();
    while (sibling != null && processSibling(sibling, result, elementType)) {
      sibling = sibling.getTreeNext();
    }
    assert result.get().getEndOffset() <= myDocument.getTextLength() : "PSI-document mismatch";
    return result.get();
  }
private @NotNull TextRange getRangeWithSiblings(@NotNull ASTNode astNode)