This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
VisitorClassDiagram. VisitorClassDiagram own Cfoncea talk File VisitorDiagram svg Cfoncea original upload log page en VisitorClassDiagram Cfoncea bytes no VisitorClassDiagram selfmade Feb Visitor pattern
Page 2023 Free-images.com. All images are Public Domain