diff --git a/pom.xml b/pom.xml
index b85bfd4..c231fbd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
     <groupId>com.loafle.overflow</groupId>
     <artifactId>commons-java</artifactId>
     <packaging>jar</packaging>
-    <version>1.0.40-SNAPSHOT</version>
+    <version>1.0.41-SNAPSHOT</version>
     <name>com.loafle.overflow.commons-java</name>
 
     <properties>
diff --git a/src/main/java/com/loafle/overflow/model/meta/MetaIPType.java b/src/main/java/com/loafle/overflow/model/meta/MetaIPType.java
index 96ee1ee..7ba0ba2 100644
--- a/src/main/java/com/loafle/overflow/model/meta/MetaIPType.java
+++ b/src/main/java/com/loafle/overflow/model/meta/MetaIPType.java
@@ -71,25 +71,25 @@ public class MetaIPType {
     public MetaIPType to() {
       return new MetaIPType(this.value);
     }
+  }
 
-    public Enum from(MetaIPType metaIPType) {
-      switch (metaIPType.id) {
-      case 2:
-        return V6;
+  public static Enum from(MetaIPType metaIPType) {
+    switch (metaIPType.id) {
+    case 2:
+      return Enum.V6;
 
-      default:
-        return V4;
-      }
+    default:
+      return Enum.V4;
     }
+  }
 
-    public Enum from(String metaIPTypeKey) {
-      switch (metaIPTypeKey) {
-      case "V6":
-        return V6;
+  public Enum from(String metaIPTypeKey) {
+    switch (metaIPTypeKey) {
+    case "V6":
+      return Enum.V6;
 
-      default:
-        return V4;
-      }
+    default:
+      return Enum.V4;
     }
   }
 }