Use switch for different protocol value

Author: cYKatherine

src/main/java/com/uid2/shared/secure/Protocol.java

@@ -1,19 +1,27 @@
 package com.uid2.shared.secure;
 
 public enum Protocol {
-    GCP_OIDC("gcp-oidc"),
-    GCP_VMID("gcp-vmid"),
-    AWS_NITRO("aws-nitro"),
-    AZURE_CC_ACI("azure-cc"),
-    AZURE_CC_AKS("azure-cc-aks");
-
-    private final String protocolValue;
-
-    Protocol(String protocolValue) {
-        this.protocolValue = protocolValue;
-    }
+    GCP_OIDC,
+    GCP_VMID,
+    AWS_NITRO,
+    AZURE_CC_ACI,
+    AZURE_CC_AKS;
 
     public String toString() {
-        return this.protocolValue;
+        switch(this) {
+            case GCP_OIDC:
+                return "gcp-oidc";
+            case GCP_VMID:
+                return "gcp-vmid";
+            case AWS_NITRO:
+                return "aws-nitro";
+            case AZURE_CC_ACI:
+                return "azure-cc";
+            case AZURE_CC_AKS:
+                return "azure-cc-aks";
+            default:
+                return "unknown-protocol";
+        }
+
     }
 }