Made it possible to use messageSender rather than messageSenders property.

core/src/main/java/org/springframework/ws/client/core/support/WebServiceGatewaySupport.java

@@ -104,16 +104,16 @@ public abstract class WebServiceGatewaySupport implements InitializingBean {
         webServiceTemplate.setDestinationProvider(destinationProvider);
     }
 
-    /** Returns the <code>WebServiceMessageSender</code> used by the gateway. */
-    public final WebServiceMessageSender[] getMessageSender() {
-        return webServiceTemplate.getMessageSenders();
-    }
-
     /** Sets a single <code>WebServiceMessageSender</code> to be used by the gateway. */
     public final void setMessageSender(WebServiceMessageSender messageSender) {
         webServiceTemplate.setMessageSender(messageSender);
     }
 
+    /** Returns the <code>WebServiceMessageSender</code>s used by the gateway. */
+    public final WebServiceMessageSender[] getMessageSenders() {
+        return webServiceTemplate.getMessageSenders();
+    }
+
     /** Sets multiple <code>WebServiceMessageSender</code> to be used by the gateway. */
     public final void setMessageSenders(WebServiceMessageSender[] messageSenders) {
         webServiceTemplate.setMessageSenders(messageSenders);