From 216d319f847f6fde9effe75255fd25e66db4f511 Mon Sep 17 00:00:00 2001
From: "Anna.Kozlova" <anna.kozlova@jetbrains.com>
Date: Fri, 8 Apr 2016 18:22:39 +0200
Subject: [PATCH] contracts

---
 java/java-psi-api/src/com/intellij/psi/LambdaUtil.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java b/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java
index 1606d513ace5..9ac101f0daad 100644
--- a/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java
+++ b/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java
@@ -60,6 +60,7 @@ public class LambdaUtil {
     return null;
   }
 
+  @Contract("null -> null")
   @Nullable
   public static PsiMethod getFunctionalInterfaceMethod(@Nullable PsiType functionalInterfaceType) {
     return getFunctionalInterfaceMethod(PsiUtil.resolveGenericsClassInType(functionalInterfaceType));
@@ -78,6 +79,7 @@ public class LambdaUtil {
     return getFunctionalInterfaceMethod(result.getElement());
   }
 
+  @Contract("null -> null")
   @Nullable
   public static PsiMethod getFunctionalInterfaceMethod(PsiClass aClass) {
     final MethodSignature methodSignature = getFunction(aClass);