Instead of having a set of hardcoded rules in the collection and
object instance collection builder introduce new node on object's
INSTANCING component which is to be hooked up to the node which is
duplicating the object.
Should be no functional changes.
Currently there is no functional changes.
In the future it allows to more easily hook the shading component
to other nodes to ensure the visibility flow.
Note that since the operation is not used by any relation it will
appear disconnected in the graphviz debugger. This is due to the
current behavior of deg_graph_remove_unused_noops().
