Returns the value of ContainedIn attribute. This attribute represents reference to the element to port connection relationship. The relationship then refers to the element in which this port is contained.

• IFC4 CHANGE: The cardinality has been changed from 1:1 to 0:1.
• IFC4 DEPRECATION: The inverse relationship is deprecated for fixed ports due to deprecation of IfcRelConnectsPortToElement for this usage. Use inverse relationship Nests instead.