private void populateParentToChildLookup(@Nonnull ClassInfo info) {
		populateParentToChildLookup(info, Collections.newSetFromMap(new IdentityHashMap<>()));
	}
Populate all references from the given child class to its parents.

@param info
		Child class.
recaf-core/src/main/java/software/coley/recaf/services/inheritance/InheritanceGraph.java