extensions/typescript-language-features/src/languageFeatures/completions.ts/TypeScriptCompletionItemProvider/resolveCompletionItem
class TypeScriptCompletionItemProvider:	public async resolveCompletionItem(
		item: MyCompletionItem,
		token: vscode.CancellationToken
	): Promise<MyCompletionItem | undefined> {
		await item.resolveCompletionItem(this.client, token);
		return item;
	}