finished component: MustBeRefresh

src/main/java/component/CanBePrefix.java

@@ -79,6 +79,7 @@ public class CanBePrefix implements TlvComponentBase,InitialAble, IEncodingAble
             return false;
         }
 
+        // 这是一个存在性组件，所以存在则为 true
         this.canBePrefix=true;
         return true;
     }