src/vs/platform/extensionManagement/common/extensionsScannerService.ts/CachedExtensionsScanner/readExtensionCache
class CachedExtensionsScanner:	private async readExtensionCache(): Promise<IExtensionCacheData | null> {
		try {
			const cacheRawContents = await this.fileService.readFile(this.cacheFile);
			const extensionCacheData: IExtensionCacheData = JSON.parse(cacheRawContents.value.toString());
			return { result: extensionCacheData.result, input: revive(extensionCacheData.input) };
		} catch (error) {
			this.logService.debug('Error while reading the extension cache file:', this.cacheFile.path, getErrorMessage(error));
		}
		return null;
	}