src/vs/editor/contrib/snippet/snippetController2.ts/SnippetController2/constructor
class SnippetController2:	constructor(
		private readonly _editor: ICodeEditor,
		@ILogService private readonly _logService: ILogService,
		@IContextKeyService contextKeyService: IContextKeyService
	) {
		this._inSnippet = SnippetController2.InSnippetMode.bindTo(contextKeyService);
		this._hasNextTabstop = SnippetController2.HasNextTabstop.bindTo(contextKeyService);
		this._hasPrevTabstop = SnippetController2.HasPrevTabstop.bindTo(contextKeyService);
	}