Legal work is legally using some contents of Stackoverflow network under the legal license provided in the following article:

Our data entry team is collecting only some best answered quesitons from Stackoverflow under license cc by-sa 3.0 with attribution.

It is also clearly mentioned that the stackoverflow reference page, author of question and author of best answer and reference with hyperlink directly to the original question without "no follow" tag.

For any query don't hesitate to contact us.