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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 reftrack_object_data(rt, role):
 """Return the reftrack for REFTRACK_OBJECT_ROLE :param rt: the :class:`jukeboxcore.reftrack.Reftrack` holds the data :type rt: :class:`jukeboxcore.reftrack.Reftrack` :param role: item data role :type role: QtCore.Qt.ItemDataRole :returns: data for the id :rtype: depending on the role :raises: None """

    if role == QtCore.Qt.DisplayRole:
        return str(rt)
    if role == REFTRACK_OBJECT_ROLE:
        return rt