From ca0263fc5aa5969f41d545179dfe8545749d5afe Mon Sep 17 00:00:00 2001
From: Johnny Lim <izeye@naver.com>
Date: Thu, 22 Nov 2018 22:40:35 +0900
Subject: [PATCH] #751 - Align Hop header assertions with HttpHeaders and
 javadocs.

Spring Framework accepts `null` for header values in HttpHeaders. This is already reflected in the javadocs.
---
 src/main/java/org/springframework/hateoas/client/Hop.java | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/main/java/org/springframework/hateoas/client/Hop.java b/src/main/java/org/springframework/hateoas/client/Hop.java
index 3d887f61..9f60827a 100644
--- a/src/main/java/org/springframework/hateoas/client/Hop.java
+++ b/src/main/java/org/springframework/hateoas/client/Hop.java
@@ -95,8 +95,7 @@ public class Hop {
 	 */
 	public Hop header(String headerName, String headerValue) {
 
-		Assert.notNull(headerName, "headerName must not be null!");
-		Assert.notNull(headerValue, "headerValue must not be null!");
+		Assert.hasText(headerName, "headerName must not be null or empty!");
 
 		if (this.headers == HttpHeaders.EMPTY) {