@Override
			public void modifyPrivate(ProgramDB program) {
				ReferenceManager refMgr = program.getReferenceManager();
				Reference ref;
				ref = refMgr.addMemoryReference(addr(program, "0x1002eaf"),
					addr(program, "0x1002ee2"), RefType.WRITE, SourceType.USER_DEFINED, -1);
				ref = refMgr.addMemoryReference(addr(program, "0x1002f3e"),
					addr(program, "0x1002f49"), RefType.DATA, SourceType.USER_DEFINED, 1);
				refMgr.setPrimary(ref, false);
				ref = refMgr.addMemoryReference(addr(program, "0x1002f73"),
					addr(program, "0x00000064"), RefType.READ, SourceType.USER_DEFINED, 0);
			}
Test the merge of the versioned program's listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/RefMergerMemTest.java