Add thread assertions to Widget

runelite-mixins/src/main/java/net/runelite/mixins/RSWidgetMixin.java

@@ -113,6 +113,8 @@ public abstract class RSWidgetMixin implements RSWidget
 	@Override
 	public int getParentId()
 	{
+		assert client.isClientThread();
+
 		int rsParentId = getRSParentId();
 		if (rsParentId != -1)
 		{
@@ -198,6 +200,8 @@ public abstract class RSWidgetMixin implements RSWidget
 	@Override
 	public boolean isHidden()
 	{
+		assert client.isClientThread();
+
 		if (isSelfHidden())
 		{
 			return true;
@@ -359,6 +363,8 @@ public abstract class RSWidgetMixin implements RSWidget
 	@Override
 	public Widget[] getNestedChildren()
 	{
+		assert client.isClientThread();
+
 		if (getRSParentId() == getId())
 		{
 			// This is a dynamic widget, so it can't have nested children
@@ -494,6 +500,8 @@ public abstract class RSWidgetMixin implements RSWidget
 	@Override
 	public Widget createChild(int index, int type)
 	{
+		assert client.isClientThread();
+
 		RSWidget w = client.createWidget();
 		w.setType(type);
 		w.setParentId(getId());
@@ -537,6 +545,8 @@ public abstract class RSWidgetMixin implements RSWidget
 	@Override
 	public void revalidate()
 	{
+		assert client.isClientThread();
+
 		client.revalidateWidget(this);
 	}
 
@@ -544,6 +554,8 @@ public abstract class RSWidgetMixin implements RSWidget
 	@Override
 	public void revalidateScroll()
 	{
+		assert client.isClientThread();
+
 		client.revalidateWidget(this);
 		client.revalidateWidgetScroll(client.getWidgets()[TO_GROUP(this.getId())], this, false);
 	}