@Override
	public void domainObjectChanged(DomainObjectChangedEvent ev) {
		if (program != null && ev.contains(DomainObjectEvent.RESTORED)) {
			block = program.getMemory().getBlock(blockStart);
		}
	}
@see ghidra.framework.model.DomainObjectListener#domainObjectChanged(ghidra.framework.model.DomainObjectChangedEvent)
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/memory/MoveBlockModel.java