public void addDirectBaseClass(Composite comp, CppCompositeType baseClassType, int offset)
			throws PdbException {
		addDirectBaseClass(comp, baseClassType, ClassFieldAttributes.UNKNOWN, offset);
	}
Method to add a direct base class for this class.  Does not include attributes...
this method is suitable for testing
@param comp the base composite
@param baseClassType the base class type
@param offset the offset
@throws PdbException upon issue with the base not being suitable
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/CppCompositeType.java