From 13cc61658d3558abeba1313a85b235f107e03239 Mon Sep 17 00:00:00 2001
From: klessard <klessard@expedia.com>
Date: Sun, 11 Jul 2021 21:48:37 -0400
Subject: [PATCH] Fix NPE in Signature.toString()

---
 .../src/main/java/org/tensorflow/Signature.java              | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/Signature.java b/tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/Signature.java
index 66b4dad4132..c0d15050159 100644
--- a/tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/Signature.java
+++ b/tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/Signature.java
@@ -172,8 +172,9 @@ public Set<String> outputNames() {
   @Override
   public String toString() {
     StringBuilder strBuilder = new StringBuilder("Signature for \"" + key +"\":\n");
-    if (!methodName().isEmpty()) {
-      strBuilder.append("\tMethod: \"").append(methodName()).append("\"\n");
+    String methodName = methodName();
+    if (methodName != null && !methodName.isEmpty()) {
+      strBuilder.append("\tMethod: \"").append(methodName).append("\"\n");
     }
     if (signatureDef.getInputsCount() > 0) {
       strBuilder.append("\tInputs:\n");