@Override
		public DataType addDataType(DataType dataType, DataTypeConflictHandler handler) {
			// handler ignored - tests should not induce conflicts
			String pathname = dataType.getPathName();
			DataType myDt = dataTypeMap.get(pathname);
			if (myDt != null) {
				return myDt;
			}
			DataType dt = dataType.clone(this);
			dataTypeMap.put(pathname, dt);
			return dt;
		}
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