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/core/java/android/view/textclassifier/SelectionEvent.java b/core/java/android/view/textclassifier/SelectionEvent.java
index b073596..105cbcc 100644
--- a/core/java/android/view/textclassifier/SelectionEvent.java
+++ b/core/java/android/view/textclassifier/SelectionEvent.java
@@ -643,7 +643,7 @@
                 mSessionId, mStart, mEnd, mSmartStart, mSmartEnd);
     }
 
-    public static final Creator<SelectionEvent> CREATOR = new Creator<SelectionEvent>() {
+    public static final @android.annotation.NonNull Creator<SelectionEvent> CREATOR = new Creator<SelectionEvent>() {
         @Override
         public SelectionEvent createFromParcel(Parcel in) {
             return new SelectionEvent(in);