optimize then function in kind visitor

pkg/kubectl/apps/kind_visitor.go

@@ -39,35 +39,25 @@ type GroupKindElement schema.GroupKind
 
 // Accept calls the Visit method on visitor that corresponds to elem's Kind
 func (elem GroupKindElement) Accept(visitor KindVisitor) error {
-	if elem.GroupMatch("apps", "extensions") && elem.Kind == "DaemonSet" {
+	switch {
+	case elem.GroupMatch("apps", "extensions") && elem.Kind == "DaemonSet":
 		visitor.VisitDaemonSet(elem)
-		return nil
-	}
-	if elem.GroupMatch("apps", "extensions") && elem.Kind == "Deployment" {
+	case elem.GroupMatch("apps", "extensions") && elem.Kind == "Deployment":
 		visitor.VisitDeployment(elem)
-		return nil
-	}
-	if elem.GroupMatch("batch") && elem.Kind == "Job" {
+	case elem.GroupMatch("batch") && elem.Kind == "Job":
 		visitor.VisitJob(elem)
-		return nil
-	}
-	if elem.GroupMatch("", "core") && elem.Kind == "Pod" {
+	case elem.GroupMatch("", "core") && elem.Kind == "Pod":
 		visitor.VisitPod(elem)
-		return nil
-	}
-	if elem.GroupMatch("extensions") && elem.Kind == "ReplicaSet" {
+	case elem.GroupMatch("extensions") && elem.Kind == "ReplicaSet":
 		visitor.VisitReplicaSet(elem)
-		return nil
-	}
-	if elem.GroupMatch("", "core") && elem.Kind == "ReplicationController" {
+	case elem.GroupMatch("", "core") && elem.Kind == "ReplicationController":
 		visitor.VisitReplicationController(elem)
-		return nil
-	}
-	if elem.GroupMatch("apps") && elem.Kind == "StatefulSet" {
+	case elem.GroupMatch("apps") && elem.Kind == "StatefulSet":
 		visitor.VisitStatefulSet(elem)
-		return nil
+	default:
+		return fmt.Errorf("no visitor method exists for %v", elem)
 	}
-	return fmt.Errorf("no visitor method exists for %v", elem)
+	return nil
 }
 
 // GroupMatch returns true if and only if elem's group matches one