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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def copy_user_data(self, source, index_offset=0):
 """Copy comments and other user data from the source segment to this segment. The index offset is the offset into self based on the index of source. """

        for index, comment in source.iter_comments_in_segment():
            self.set_comment_at(index + index_offset, comment)