Ahsoka pushed Star Wars to its limit in its fifth episode. It brought all aspects of the franchise together seamlessly weaved together a story that brought all of Ahsoka's life together. Ahsoka had entered the World Between Worlds and where Anakin Skywalker gave her the choice of life or death. He was determined to teach Ahsoka a lesson about her life and the path that she was following. In teaching this lesson, Ahsoka was taken on a journey that was similar to the journey of Scrooge in Charles Dickens A Christmas Carol.
Source:https://www.cbr.com/ahsoka-flashbacks-lesson-a-christmas-carol/