private void updateCoordinator() {
		if (coordinator != null) {
			coordinator.dispose();
			coordinator = null;
		}
		if (listingsLocked) {
			coordinator = new ListingCoordinator(displays, addressCorrelator);
			coordinator.sync(activeSide);
		}
	}
Notification that a program location changed on one side.
@param side the side that changed
@param location the new location for the given side
@param trigger the trigger for the change
Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingCodeComparisonPanel.java