This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Get the SDO_Model_Property that contains the SDO_DataObject.
This method is used to navigate up to the parent's property which
contains the data object which has been reflected upon.
Returns the container's SDO_Model_Property which references the
SDO_DataObject, or NULL if it is a root SDO_DataObject.