private void disposeMarkerSets(Program program) {

		markerService.removeMarker(currentMyChangeMarks, program);
		markerService.removeMarker(currentChangesSinceCheckoutMarks, program);
		markerService.removeMarker(currentOtherChangeMarks, program);
		markerService.removeMarker(currentConflictChangeMarks, program);

		currentMyChangeMarks = null;
		currentChangesSinceCheckoutMarks = null;
		currentOtherChangeMarks = null;
		currentConflictChangeMarks = null;
	}
Manages the markers to display areas where changes have occurred
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/misc/MyProgramChangesDisplayPlugin.java