proxy

type MethodDescriptor struct {
	Method           reflect.Method
	CallerValue      reflect.Value
	CtxType          reflect.Type
	ArgsType         []reflect.Type
	ArgsNum          int
	ReturnValuesType []reflect.Type
	ReturnValuesNum  int
}

type ServiceDescriptor struct {
	Name         string
	ReflectType  reflect.Type
	ReflectValue reflect.Value
	Methods      sync.Map //string -> *MethodDescriptor
}