I was hoping to contribute towards the Sage community in the coming summer ad thus in preparation, I was going through a few beginner tickets. I first tried #13649 but in the current code, the implementation seems to be done already as calling domain on an element works as intended. Also, codomain is not really defined for the symmetric group. Then, I sent a review request on the ticket #28882. I would really appreciate some feedback on whether I sent the request properly since this is my first time contributing to sage.
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