Memperbaiki tipe data ke mutable

android/src/main/java/AuthPlugin.kt

@@ -35,12 +35,12 @@ class KirimArgs {
 class BluclasPlugin(private val activity: Activity) : Plugin(activity) {
     private val credentialManager by lazy { CredentialManager.create(activity) }
     private val scope = CoroutineScope(Dispatchers.Main)
-    private val idKlien: String = String.empty
+    private var idKlien: String? = null
 
     @Command
     fun masuk(invoke: Invoke) {
         val args = invoke.parseArgs(KirimArgs::class.java)
-        idKlien = args.idKlien ?: ""
+        idKlien = args.idKlien
         if (idKlien.isNullOrEmpty()) {
             invoke.reject("ID Klien belum disediakan")
             return