src/vs/workbench/contrib/notebook/browser/contrib/editorStatusBar/editorStatusBar.ts/KernelStatus/constructor
class KernelStatus:	constructor(
		@IEditorService private readonly _editorService: IEditorService,
		@IStatusbarService private readonly _statusbarService: IStatusbarService,
		@INotebookKernelService private readonly _notebookKernelService: INotebookKernelService,
		@IInstantiationService private readonly _instantiationService: IInstantiationService,
	) {
		super();
		this._register(this._editorService.onDidActiveEditorChange(() => this._updateStatusbar()));
	}