From bda2639376d3a2fb19e40f9de007323d50c9abe9 Mon Sep 17 00:00:00 2001
From: Jiuqiang Tang <jqtang@google.com>
Date: Tue, 28 Mar 2023 12:18:09 -0700
Subject: [PATCH] Switch to use the `isPresent()` API since the `isEmpty()` is
 only available since java 11:
 https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Optional.html#isEmpty().

PiperOrigin-RevId: 520099308
---
 .../tasks/vision/facelandmarker/FaceLandmarkerResult.java     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mediapipe/tasks/java/com/google/mediapipe/tasks/vision/facelandmarker/FaceLandmarkerResult.java b/mediapipe/tasks/java/com/google/mediapipe/tasks/vision/facelandmarker/FaceLandmarkerResult.java
index 6493a6b5f..bafa40e19 100644
--- a/mediapipe/tasks/java/com/google/mediapipe/tasks/vision/facelandmarker/FaceLandmarkerResult.java
+++ b/mediapipe/tasks/java/com/google/mediapipe/tasks/vision/facelandmarker/FaceLandmarkerResult.java
@@ -57,7 +57,7 @@ public abstract class FaceLandmarkerResult implements TaskResult {
       }
     }
     Optional<List<List<Category>>> multiFaceBlendshapes = Optional.empty();
-    if (!multiFaceBendshapesProto.isEmpty()) {
+    if (multiFaceBendshapesProto.isPresent()) {
       List<List<Category>> blendshapes = new ArrayList<>();
       for (ClassificationList faceBendshapeProto : multiFaceBendshapesProto.get()) {
         List<Category> blendshape = new ArrayList<>();
@@ -74,7 +74,7 @@ public abstract class FaceLandmarkerResult implements TaskResult {
       multiFaceBlendshapes = Optional.of(Collections.unmodifiableList(blendshapes));
     }
     Optional<List<float[]>> multiFaceTransformationMatrixes = Optional.empty();
-    if (!multiFaceTransformationMatrixesProto.isEmpty()) {
+    if (multiFaceTransformationMatrixesProto.isPresent()) {
       List<float[]> matrixes = new ArrayList<>();
       for (MatrixData matrixProto : multiFaceTransformationMatrixesProto.get()) {
         if (matrixProto.getPackedDataCount() != 16) {