database/src/main/java/com/firebase/ui/database/FirebaseRecyclerOptions.java [29:80]:
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                                    @Nullable LifecycleOwner owner) {
        mSnapshots = snapshots;
        mOwner = owner;
    }

    /**
     * Get the {@link ObservableSnapshotArray} to listen to.
     */
    @NonNull
    public ObservableSnapshotArray<T> getSnapshots() {
        return mSnapshots;
    }

    /**
     * Get the (optional) LifecycleOwner. Listening will start/stop after the appropriate lifecycle
     * events.
     */
    @Nullable
    public LifecycleOwner getOwner() {
        return mOwner;
    }

    /**
     * Builder for a {@link FirebaseRecyclerOptions}.
     *
     * @param <T> the model class for the {@link FirebaseRecyclerAdapter}.
     */
    public static final class Builder<T> {

        private ObservableSnapshotArray<T> mSnapshots;
        private LifecycleOwner mOwner;

        /**
         * Directly set the {@link ObservableSnapshotArray} to be listened to.
         * <p>
         * Do not call this method after calling {@code setQuery}.
         */
        @NonNull
        public Builder<T> setSnapshotArray(@NonNull ObservableSnapshotArray<T> snapshots) {
            assertNull(mSnapshots, ERR_SNAPSHOTS_SET);

            mSnapshots = snapshots;
            return this;
        }

        /**
         * Set the Firebase query to listen to, along with a {@link SnapshotParser} to parse
         * snapshots into model objects.
         * <p>
         * Do not call this method after calling {@link #setSnapshotArray(ObservableSnapshotArray)}.
         */
        @NonNull
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firestore/src/main/java/com/firebase/ui/firestore/FirestoreRecyclerOptions.java [29:76]:
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                                     @Nullable LifecycleOwner owner) {
        mSnapshots = snapshots;
        mOwner = owner;
    }

    /**
     * Get the {@link ObservableSnapshotArray} to observe.
     */
    @NonNull
    public ObservableSnapshotArray<T> getSnapshots() {
        return mSnapshots;
    }

    /**
     * Get the (optional) {@link LifecycleOwner}.
     */
    @Nullable
    public LifecycleOwner getOwner() {
        return mOwner;
    }

    /**
     * Builder for {@link FirestoreRecyclerOptions}.
     *
     * @param <T> the model class for the {@link FirestoreRecyclerAdapter}.
     */
    public static final class Builder<T> {

        private ObservableSnapshotArray<T> mSnapshots;
        private LifecycleOwner mOwner;

        /**
         * Directly set the {@link ObservableSnapshotArray}.
         * <p>
         * Do not call this method after calling {@code setQuery}.
         */
        @NonNull
        public Builder<T> setSnapshotArray(@NonNull ObservableSnapshotArray<T> snapshots) {
            assertNull(mSnapshots, ERR_SNAPSHOTS_SET);

            mSnapshots = snapshots;
            return this;
        }

        /**
         * Calls {@link #setQuery(Query, MetadataChanges, Class)} with metadata changes excluded.
         */
        @NonNull
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