static CppCompositeType createE_struct64(VxtManager vxtManager) {
		CppCompositeType E_struct = createStruct64("E", 4);
		E_struct.addMember("e1", intT, false, 0);
		return E_struct;
	}
This is not part of the DataTypeManager API... it is only for testing when needing
 to clear results because of another run that creates the same-named types
Ghidra/Features/PDB/src/test/java/ghidra/app/util/pdb/pdbapplicator/CppCompositeTypeTest.java