@Override
			public void modifyOriginal(ProgramDB program) {
				ReferenceManager refMgr = program.getReferenceManager();
				refMgr.addMemoryReference(addr(program, "0x01002f49"),
					addr(program, "0x01002f55"), RefType.READ_WRITE, SourceType.USER_DEFINED,
					-1);
				
				assertNotNull(refMgr.getReference(addr(program, "0x01002f49"),
					addr(program, "0x01002f55"), -1));
			}
Test the merge of the versioned program's listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/RefMergerMemTest.java