src/vs/platform/files/common/fileService.ts/FileService/readFile
class FileService:	async readFile(resource: URI, options?: IReadFileOptions): Promise<IFileContent> {
		const provider = await this.withReadProvider(resource);

		if (options?.atomic) {
			return this.doReadFileAtomic(provider, resource, options);
		}

		return this.doReadFile(provider, resource, options);
	}