所有方法实例方法抽象方法
修饰符和类型	方法	说明
`void`	`addAttribute(String key, Object value)`
`Object`	`getAttribute(String key)`
`String[]`	`getCompatibleParamSignatures()`	duplicate filed as paramDesc, but with different format.
`Method`	`getMethod()`	Only available for ReflectionMethod
`String`	`getMethodName()`
`String`	`getParamDesc()`
`Class<?>[]`	`getParameterClasses()`
`Class<?>`	`getReturnClass()`
`Type[]`	`getReturnTypes()`
`MethodDescriptor.RpcType`	`getRpcType()`
`boolean`	`isGeneric()`

getCompatibleParamSignatures
```
String[] getCompatibleParamSignatures()
```
duplicate filed as paramDesc, but with different format.

void addAttribute(String key,
                  Object value)

接口 MethodDescriptor