Remove @Beta from Streams methods mapWithIndex and findLast.

RELNOTES=`collect`: Removed `@Beta` from `Streams` methods `mapWithIndex` and `findLast`.
PiperOrigin-RevId: 419831941

Author: cpovirk

guava/src/com/google/common/collect/Streams.java

@@ -425,7 +425,6 @@ private static class TemporaryPair<A extends @Nullable Object, B extends @Nullab
    * <p>The order of the resulting stream is defined if and only if the order of the original stream
    * was defined.
    */
-  @Beta
   public static <T extends @Nullable Object, R extends @Nullable Object> Stream<R> mapWithIndex(
       Stream<T> stream, FunctionWithIndex<? super T, ? extends R> function) {
     checkNotNull(stream);
@@ -509,7 +508,6 @@ Splitr createSplit(Spliterator<T> from, long i) {
    * <p>The order of the resulting stream is defined if and only if the order of the original stream
    * was defined.
    */
-  @Beta
   public static <R extends @Nullable Object> Stream<R> mapWithIndex(
       IntStream stream, IntFunctionWithIndex<R> function) {
     checkNotNull(stream);
@@ -589,7 +587,6 @@ Splitr createSplit(Spliterator.OfInt from, long i) {
    * <p>The order of the resulting stream is defined if and only if the order of the original stream
    * was defined.
    */
-  @Beta
   public static <R extends @Nullable Object> Stream<R> mapWithIndex(
       LongStream stream, LongFunctionWithIndex<R> function) {
     checkNotNull(stream);
@@ -669,7 +666,6 @@ Splitr createSplit(Spliterator.OfLong from, long i) {
    * <p>The order of the resulting stream is defined if and only if the order of the original stream
    * was defined.
    */
-  @Beta
   public static <R extends @Nullable Object> Stream<R> mapWithIndex(
       DoubleStream stream, DoubleFunctionWithIndex<R> function) {
     checkNotNull(stream);
@@ -735,7 +731,6 @@ Splitr createSplit(Spliterator.OfDouble from, long i) {
    *
    * @since 21.0
    */
-  @Beta
   public interface FunctionWithIndex<T extends @Nullable Object, R extends @Nullable Object> {
     /** Applies this function to the given argument and its index within a stream. */
     @ParametricNullness
@@ -791,7 +786,6 @@ public int characteristics() {
    *
    * @since 21.0
    */
-  @Beta
   public interface IntFunctionWithIndex<R extends @Nullable Object> {
     /** Applies this function to the given argument and its index within a stream. */
     @ParametricNullness
@@ -806,7 +800,6 @@ public interface IntFunctionWithIndex<R extends @Nullable Object> {
    *
    * @since 21.0
    */
-  @Beta
   public interface LongFunctionWithIndex<R extends @Nullable Object> {
     /** Applies this function to the given argument and its index within a stream. */
     @ParametricNullness
@@ -821,7 +814,6 @@ public interface LongFunctionWithIndex<R extends @Nullable Object> {
    *
    * @since 21.0
    */
-  @Beta
   public interface DoubleFunctionWithIndex<R extends @Nullable Object> {
     /** Applies this function to the given argument and its index within a stream. */
     @ParametricNullness
@@ -853,7 +845,6 @@ public interface DoubleFunctionWithIndex<R extends @Nullable Object> {
    * split has a last element of null, so throw NPE" from "the final split was empty, so look for an
    * element in the prior one.")
    */
-  @Beta
   public static <T> java.util.Optional<T> findLast(Stream<T> stream) {
     class OptionalState {
       boolean set = false;
@@ -932,7 +923,6 @@ T get() {
    * @see IntStream#findFirst()
    * @throws NullPointerException if the last element of the stream is null
    */
-  @Beta
   public static OptionalInt findLast(IntStream stream) {
     // findLast(Stream) does some allocation, so we might as well box some more
     java.util.Optional<Integer> boxedLast = findLast(stream.boxed());
@@ -951,7 +941,6 @@ public static OptionalInt findLast(IntStream stream) {
    * @see LongStream#findFirst()
    * @throws NullPointerException if the last element of the stream is null
    */
-  @Beta
   public static OptionalLong findLast(LongStream stream) {
     // findLast(Stream) does some allocation, so we might as well box some more
     java.util.Optional<Long> boxedLast = findLast(stream.boxed());
@@ -970,7 +959,6 @@ public static OptionalLong findLast(LongStream stream) {
    * @see DoubleStream#findFirst()
    * @throws NullPointerException if the last element of the stream is null
    */
-  @Beta
   public static OptionalDouble findLast(DoubleStream stream) {
     // findLast(Stream) does some allocation, so we might as well box some more
     java.util.Optional<Double> boxedLast = findLast(stream.boxed());