private void modelChanged(UpdateType updateType) {
		this.setChanged();
		this.notifyObservers(updateType);
	}
Must be called whenever the set of instructions has changed. When this
happens we have to notify subscribers.

@param updateType reload or update change type
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/instructionsearch/model/InstructionSearchData.java