@Override
			public void modifyLatest(ProgramDB program) {
				PropertyMapManager pmm = program.getUsrPropertyManager();

				IntPropertyMap ipm = pmm.getIntPropertyMap("Space");
				ipm.remove(addr(program, "0x10018ba"));
				ipm.remove(addr(program, "0x10018ce"));
				ipm.add(addr(program, "0x1002428"), 4);
				ipm.add(addr(program, "0x100248c"), 5);

				ObjectPropertyMap<?> opm = pmm.getObjectPropertyMap("testColor");
				opm.remove(addr(program, "0x100248c"));
				opm.remove(addr(program, "0x10039f1"));
				opm.add(addr(program, "0x10039f8"), new SaveableColor(Color.BLUE));
				opm.add(addr(program, "0x10039fe"), new SaveableColor(Color.PINK));
			}
Test the merge of the versioned program's listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/UserDefinedPropertyMergeManagerTest.java