Use Integer on Task to prevent defaulting

Author: jingming

src/main/java/com/twilio/twiml/Task.java

@@ -11,10 +11,10 @@
 public class Task extends TwiML {
 
     @XmlAttribute
-    private final int priority;
+    private final Integer priority;
 
     @XmlAttribute
-    private final int timeout;
+    private final Integer timeout;
 
     @XmlValue
     private final String data;
@@ -43,8 +43,8 @@ public String getData() {
     }
 
     public static class Builder {
-        private int priority;
-        private int timeout;
+        private Integer priority;
+        private Integer timeout;
         private String data;
 
         public Builder priority(int priority) {

src/test/java/com/twilio/twiml/EnqueueTaskTest.java

@@ -18,7 +18,7 @@ public void testXml() throws TwiMLException {
             .workflowSid("WF123")
             .build();
 
-        Assert.assertEquals("<Enqueue action=\"/enqueue\" method=\"GET\" waitUrl=\"/wait\" waitUrlMethod=\"POST\" workflowSid=\"WF123\"><Task priority=\"0\" timeout=\"0\"/></Enqueue>", enqueue.toXml());
+        Assert.assertEquals("<Enqueue action=\"/enqueue\" method=\"GET\" waitUrl=\"/wait\" waitUrlMethod=\"POST\" workflowSid=\"WF123\"><Task/></Enqueue>", enqueue.toXml());
     }
 
     @Test
@@ -31,6 +31,6 @@ public void testUrl() throws TwiMLException {
             .workflowSid("WF123")
             .build();
 
-        Assert.assertEquals("%3CEnqueue+action%3D%22%2Fenqueue%22+method%3D%22GET%22+waitUrl%3D%22%2Fwait%22+waitUrlMethod%3D%22POST%22+workflowSid%3D%22WF123%22%3E%3CTask+priority%3D%220%22+timeout%3D%220%22%2F%3E%3C%2FEnqueue%3E", enqueue.toUrl());
+        Assert.assertEquals("%3CEnqueue+action%3D%22%2Fenqueue%22+method%3D%22GET%22+waitUrl%3D%22%2Fwait%22+waitUrlMethod%3D%22POST%22+workflowSid%3D%22WF123%22%3E%3CTask%2F%3E%3C%2FEnqueue%3E", enqueue.toUrl());
     }
 }

src/test/java/com/twilio/twiml/TaskTest.java

@@ -19,6 +19,16 @@ public void testXml() throws TwiMLException {
         Assert.assertEquals("<Task priority=\"1\" timeout=\"5\">foobar</Task>", task.toXml());
     }
 
+    @Test
+    public void testXmlNoDefaults() throws TwiMLException {
+        Task task = new Task.Builder()
+            .data("foobar")
+            .timeout(5)
+            .build();
+
+        Assert.assertEquals("<Task timeout=\"5\">foobar</Task>", task.toXml());
+    }
+
     @Test
     public void testUrl() throws TwiMLException {
         Task task = new Task.Builder()