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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 id_getter(self, relation_name, strict=False):
 """Returns a function that accepts an old_id and returns the new ID for the enclosed relation name."""

    def get_id(old_id):
      """Get the new ID for the enclosed relation, given an old ID."""
      return self.get_new_id(relation_name, old_id, strict)
    return get_id