public boolean memoryMatches() {
		return programDiff.memoryMatches();
	}
Determine whether memory between the two programs matches.
For example, if one program has more memory than the other then it 
doesn't match or if the address ranges for memory are different for 
the two programs then they don't match.
@return whether the memory matches between the two programs.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramMergeManager.java