Mod: add comment for Invoker interface

protocol/invoker.go

@@ -26,7 +26,7 @@ import (
 	"github.com/apache/dubbo-go/common/logger"
 )
 
-// Invoker ...
+// Invoker the service invocation interface for the consumer
 //go:generate mockgen -source invoker.go -destination mock/mock_invoker.go  -self_package github.com/apache/dubbo-go/protocol/mock --package mock  Invoker
 // Extension - Invoker
 type Invoker interface {