diff --git a/framework-t/src/android/net/NetworkStats.java b/framework-t/src/android/net/NetworkStats.java
index 181a594..b00fea4 100644
--- a/framework-t/src/android/net/NetworkStats.java
+++ b/framework-t/src/android/net/NetworkStats.java
@@ -83,10 +83,7 @@
      */
     // TODO: Rename TAG_ALL to TAG_ANY.
     public static final int TAG_ALL = -1;
-    /**
-     * {@link #set} value for all sets combined, not including debug sets.
-     * @hide
-     */
+    /** {@link #set} value for all sets combined, not including debug sets. */
     public static final int SET_ALL = -1;
     /** {@link #set} value where background data is accounted. */
     public static final int SET_DEFAULT = 0;
@@ -114,9 +111,6 @@
             SET_ALL,
             SET_DEFAULT,
             SET_FOREGROUND,
-            SET_DEBUG_START,
-            SET_DBG_VPN_IN,
-            SET_DBG_VPN_OUT
     })
     public @interface State {
     }
@@ -131,10 +125,7 @@
     // TODO: Rename TAG_NONE to TAG_ALL.
     public static final int TAG_NONE = 0;
 
-    /**
-     * {@link #metered} value to account for all metered states.
-     * @hide
-     */
+    /** {@link #metered} value to account for all metered states. */
     public static final int METERED_ALL = -1;
     /** {@link #metered} value where native, unmetered data is accounted. */
     public static final int METERED_NO = 0;
@@ -152,10 +143,7 @@
     }
 
 
-    /**
-     * {@link #roaming} value to account for all roaming states.
-     * @hide
-     */
+    /** {@link #roaming} value to account for all roaming states. */
     public static final int ROAMING_ALL = -1;
     /** {@link #roaming} value where native, non-roaming data is accounted. */
     public static final int ROAMING_NO = 0;
@@ -172,10 +160,7 @@
     public @interface Roaming {
     }
 
-    /**
-     * {@link #onDefaultNetwork} value to account for all default network states.
-     * @hide
-     */
+    /** {@link #onDefaultNetwork} value to account for all default network states. */
     public static final int DEFAULT_NETWORK_ALL = -1;
     /** {@link #onDefaultNetwork} value to account for usage while not the default network. */
     public static final int DEFAULT_NETWORK_NO = 0;
diff --git a/framework-t/src/android/net/NetworkTemplate.java b/framework-t/src/android/net/NetworkTemplate.java
index 659ad06..e9084b0 100644
--- a/framework-t/src/android/net/NetworkTemplate.java
+++ b/framework-t/src/android/net/NetworkTemplate.java
@@ -16,6 +16,7 @@
 
 package android.net;
 
+import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
 import static android.net.ConnectivityManager.TYPE_BLUETOOTH;
 import static android.net.ConnectivityManager.TYPE_ETHERNET;
 import static android.net.ConnectivityManager.TYPE_MOBILE;
@@ -39,7 +40,9 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.SystemApi;
 import android.compat.annotation.UnsupportedAppUsage;
+import android.net.wifi.WifiInfo;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -70,7 +73,7 @@
  *
  * @hide
  */
-// @SystemApi(client = MODULE_LIBRARIES)
+@SystemApi(client = MODULE_LIBRARIES)
 public final class NetworkTemplate implements Parcelable {
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
@@ -572,6 +575,7 @@
 
     /**
      * Get subscriber Id of the template.
+     * @hide
      */
     @Nullable
     @UnsupportedAppUsage
@@ -588,26 +592,19 @@
     }
 
     /**
-     * Get Wifi Network Key of the template. See {@link WifiInfo#getCurrentNetworkKey()}.
+     * Get the set of Wifi Network Keys of the template.
+     * See {@link WifiInfo#getCurrentNetworkKey()}.
      */
-    @Nullable
-    public String getWifiNetworkKey() {
-        return CollectionUtils.isEmpty(mMatchWifiNetworkKeys) ? null : mMatchWifiNetworkKeys[0];
-    }
-
-    /**
-     * Get set of Wifi Network Keys of the template.
-     */
-    @Nullable
+    @NonNull
     public Set<String> getWifiNetworkKeys() {
         return new ArraySet<>(Arrays.asList(mMatchWifiNetworkKeys));
     }
 
     /** @hide */
-    // TODO: Remove this and replace all callers with {@link #getWifiNetworkKey()}.
+    // TODO: Remove this and replace all callers with {@link #getWifiNetworkKeys()}.
     @Nullable
     public String getNetworkId() {
-        return getWifiNetworkKey();
+        return getWifiNetworkKeys().isEmpty() ? null : getWifiNetworkKeys().iterator().next();
     }
 
     /**