@Override
			public void initializeProgram(MergeProgram program) throws Exception {
				program.addMemory("memory", "0x0", 0x200);
			}
The external function merger only detects and merges source differences when a name
difference is being merged.
Ghidra/Features/Base/src/test.slow/java/ghidra/app/merge/listing/ExternalMergerAddTest.java