What is LPAbstract3DRepReference

These variables are seen when doing an MQL search on the 3DShape.

There is a mechanism that writes these values on the 3DShape when saved in 3DX.

LPAbstract3DRepReference.V_volume_x1 -10.0
LPAbstract3DRepReference.V_volume_y1 -10.0
LPAbstract3DRepReference.V_volume_z1 -10.0
LPAbstract3DRepReference.V_volume_x2 10.0
LPAbstract3DRepReference.V_volume_y2 10.0
LPAbstract3DRepReference.V_volume_z2 10.0

Question: How can I access the values using EKL to update the property panel of a Part or Product?