阅读完整的文档，为
// Define abstract value type using interface, abstract class or annotation
Value . Immutable
public interface ValueObject extends WithValueObject {
// extend not-yet-generated WithValueObject to inherit `with*` method signatures
Strin
杂技
适用于Java的可嵌入线程安全平面文件文档数据库
例
Bucket bucket = new Bucket(); // you can pass a Context object to specify the root bucket location (./acrodb/ by default), file system (FileSystems.getDefault() by default), and data producer (gson by default).
Document
