src/vs/workbench/api/node/extHostSearch.ts/NativeExtHostSearch/$clearCache
class NativeExtHostSearch:	override $clearCache(cacheKey: string): Promise<void> {
		if (this._internalFileSearchProvider) {
			this._internalFileSearchProvider.clearCache(cacheKey);
		}

		return super.$clearCache(cacheKey);
	}