An Element with a
Type that has a
TypeKind of “StrongReference” contains an “exclusive” / “owning” (one-to-one) reference to an Object. So, more verbosely it is a “Strong Object Reference”.
Facets are prohibited for Types with a
TypeKind of “StrongReference”.
Each Type with a
TypeKind of “StrongReference” must state the target Group of the reference using the
BaseType field. References can be made to instances of this Group or its descendants / sub-classes.