@Override
			public void modifyLatest(ProgramDB program) {
				Instruction inst;
				// remove fallthrough
				inst = program.getListing().getInstructionAt(addr(program, "0x01006421"));
				inst.setFallThrough(null);
				// override fallthrough
				inst = program.getListing().getInstructionAt(addr(program, "0x0100642f"));
				inst.setFallThrough(addr(program, "0x0100643d"));
			}
Test the merge of the versioned program's listing.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/RefMergerMemTest.java