src/vs/workbench/services/views/common/viewContainerModel.ts/ViewContainerModel/getViewOrder
class ViewContainerModel:	private getViewOrder(viewDescriptorItem: IViewDescriptorItem): number {
		const viewOrder = typeof viewDescriptorItem.state.order === 'number' ? viewDescriptorItem.state.order : viewDescriptorItem.viewDescriptor.order;
		return typeof viewOrder === 'number' ? viewOrder : Number.MAX_VALUE;
	}