True if the corresponding left/upper parts profile are mirrored with respect
to the center line of the hosts to be divided. False if the profile of
left/upper parts are defined directly by the profile family.
Namespace:
Autodesk.Revit.DB
Assembly:
RevitAPI
(in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since:
2013