@NonNull
        public Builder addExtras(@NonNull Bundle extras) {
            if (extras != null) {
                mExtras.putAll(extras);
            }
            return this;
        }
Merge additional metadata into this builder.

<p>Values within the Bundle will replace existing extras values in this Builder.

@see RemoteInput#getExtras
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/compat/RemoteInput.java