private void notifySubscribers() {
		for (InstructionTableObserver obs : observers) {
			if (obs != null) {
				obs.changed();
			}
		}
	}
Fires off notifications to all subscribers that the state of the table
has changed.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/instructionsearch/model/InstructionTableDataObject.java