项目标题1
# 项目标题1
# 项目标题2
```plantuml
@startuml
abstract abstract
abstract class "abstract class"
annotation annotation
circle circle
() circle_short_form
class class
class class_stereo <>
diamond diamond
<> diamond_short_form
entity entity
enum enum
exception exception
interface interface
metaclass metaclass
protocol protocol
stereotype stereotype
struct struct
@enduml
```