private static CppCompositeType createU_struct(DataTypeManager dtm,
			CppCompositeType T_struct, CppCompositeType P_struct) throws PdbException {
		String name = "U";
		CppCompositeType struct = createStruct(dtm, name, 56);
		struct.addDirectBaseClass(T_struct.getComposite(), T_struct, publicDirectAttributes, 0);
		struct.addIndirectVirtualBaseClass(P_struct.getComposite(), P_struct,
			publicDirectAttributes, 8, ClassUtils.VXPTR_TYPE, 1);
		struct.addMember("u1", intT, false, publicDirectAttributes, 24, null);
		return struct;
	}
Class to create the egray8 64-bit program and mock PDB.
<p>
This class implementation is not complete... many more classes' expected results need
codified
Ghidra/Features/PDB/src/test/java/ghidra/app/util/pdb/Egray864ProgramCreator.java