src/vs/workbench/services/views/common/viewContainerModel.ts/ViewContainerModel/broadCastAddedVisibleViewDescriptors
class ViewContainerModel:	private broadCastAddedVisibleViewDescriptors(added: IAddedViewDescriptorRef[]): void {
		if (added.length) {
			this._onDidAddVisibleViewDescriptors.fire(added.sort((a, b) => a.index - b.index));
		}
	}