AddressSetView getFilteredDifferences() {
		AddressSetView p2DiffSet = null;
		try {
			p2DiffSet = programDiff.getDifferences(diffFilter, TaskMonitor.DUMMY);
		}
		catch (CancelledException e) {
			// Shouldn't ever throw cancelled since this method uses a dummy monitor.
			Msg.error(this, "Unexpected Exception: " + e.getMessage(), e);
		}
		return new AddressSet(p2DiffSet);
	}
Gets the filtered program differences for this merge. Only differences are
indicated for merge filter categories that are enabled and for address
that have not been marked as ignored.
@return the program differences.
The addresses in this address set are derived from program2.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramMergeManager.java