@Override
	public void domainObjectChanged(DomainObjectChangedEvent ev) {

		if (!isVisible()) {
			return;
		}

		if (ev.contains(RESTORED, FUNCTION_TAG_CREATED, FUNCTION_TAG_DELETED, FUNCTION_TAG_APPLIED,
			FUNCTION_TAG_UNAPPLIED)) {
			updater.updateLater();
			return;
		}

		if (ev.contains(FUNCTION_TAG_CHANGED)) {
			repaint();
		}
	}
Invoked when a new location has been detected in the listing. When
this happens we need to update the tag list to show what tags are assigned
at the current location.

@param loc the address selected in the listing
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/tags/FunctionTagProvider.java