Use named returns for the code style consistency

mongox/base/getprotection.go

@@ -7,11 +7,11 @@ import (
 )
 
 // GetProtection function finds protection field in the source document otherwise returns nil
-func GetProtection(source interface{}) *protection.Key {
+func GetProtection(source interface{}) (key *protection.Key) {
 
 	v := reflect.ValueOf(source)
 	if v.Kind() != reflect.Ptr || v.IsNil() {
-		return nil
+		return
 	}
 
 	el := v.Elem()
@@ -25,14 +25,16 @@ func GetProtection(source interface{}) *protection.Key {
 
 		switch field.Interface().(type) {
 		case *protection.Key:
-			return field.Interface().(*protection.Key)
+			key = field.Interface().(*protection.Key)
 		case protection.Key:
 			ptr := field.Addr()
-			return ptr.Interface().(*protection.Key)
+			key = ptr.Interface().(*protection.Key)
 		default:
 			continue
 		}
+
+		return
 	}
 
-	return nil
+	return
 }

mongox/base/jsonbased/id.go

@@ -14,7 +14,7 @@ type Primary struct {
 }
 
 // GetID returns an _id
-func (p *Primary) GetID() primitive.D {
+func (p *Primary) GetID() (id primitive.D) {
 	return p.ID
 }
 

mongox/base/oidbased/id.go

@@ -14,7 +14,7 @@ type Primary struct {
 }
 
 // GetID returns an _id
-func (p *Primary) GetID() primitive.ObjectID {
+func (p *Primary) GetID() (id primitive.ObjectID) {
 	return p.ID
 }
 

mongox/base/stringbased/id.go

@@ -12,7 +12,7 @@ type Primary struct {
 }
 
 // GetID returns an _id
-func (p *Primary) GetID() string {
+func (p *Primary) GetID() (id string) {
 	return p.ID
 }