All Parcelable CREATOR fields are @NonNull.

If they were null, then the Parcelable would fail to work.

Bug: 126726802
Test: manual
Change-Id: I7929ffa2f20e5de1c8e68e8263cca99496e9d014
Exempt-From-Owner-Approval: Trivial API annotations
diff --git a/telecomm/java/android/telecom/ParcelableConnection.java b/telecomm/java/android/telecom/ParcelableConnection.java
index 61d5a12..dab1c6e 100644
--- a/telecomm/java/android/telecom/ParcelableConnection.java
+++ b/telecomm/java/android/telecom/ParcelableConnection.java
@@ -237,7 +237,7 @@
                 .toString();
     }
 
-    public static final Parcelable.Creator<ParcelableConnection> CREATOR =
+    public static final @android.annotation.NonNull Parcelable.Creator<ParcelableConnection> CREATOR =
             new Parcelable.Creator<ParcelableConnection> () {
         @Override
         public ParcelableConnection createFromParcel(Parcel source) {