int getOffset(AbstractMsType type) {
		if (type instanceof AbstractVirtualFunctionTablePointerWithOffsetMsType offType) {
			return offType.getOffset();
		}
		return 0;
	}
Constructor for enum type applier, for transforming a enum into a Ghidra DataType
@param applicator {@link DefaultPdbApplicator} for which this class is working
@throws IllegalArgumentException Upon invalid arguments.
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/VirtualFunctionTablePointerTypeApplier.java