given a student id, ask a club for the student who has that id, if any. (what happens when the student is not in the club? you'll need to decide.)since we're arranging all of the students by their ids, it should not be possible for two students to have the same id. for that reason, ensure that attempting to add a student to the club when another student is already in the club should be an error.each student should have a name, in addition to just a student id.