src/vs/editor/contrib/suggest/browser/completionModel.ts/CompletionModel/incomplete
class CompletionModel:	get incomplete(): Set<CompletionItemProvider> {
		this._ensureCachedState();
		const result = new Set<CompletionItemProvider>();
		for (const [provider, incomplete] of this._providerInfo!) {
			if (incomplete) {
				result.add(provider);
			}
		}
		return result;
	}