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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 _set_cache_(self, attr):
 """Retrieve object information"""

        if attr == "size":
            oinfo = self.repo.odb.info(self.binsha)
            self.size = oinfo.size
            # assert oinfo.type == self.type, _assertion_msg_format % (self.binsha, oinfo.type, self.type)
        else:
            super(Object, self)._set_cache_(attr)