No need for ToString on String.

Freddie O'Connell · Freddie O'Connell · commit aa9e07b9e46f · 2016-02-01T15:06:30.000-06:00
diff --git a/TinCan/StatementsQuery.cs b/TinCan/StatementsQuery.cs
@@ -59,7 +59,7 @@ public Dictionary<String, String> ToParameterMap (TCAPIVersion version)
             }
             if (activityId != null)
             {
-                result.Add("activity", activityId.ToString());
+                result.Add("activity", activityId);
             }
             if (registration != null)
             {

Original file line number	Diff line number	Diff line change
`@@ -59,7 +59,7 @@ public Dictionary<String, String> ToParameterMap (TCAPIVersion version)`
`59`	`59`	`}`
`60`	`60`	`if (activityId != null)`
`61`	`61`	`{`
`62`		`- result.Add("activity", activityId.ToString());`
	`62`	`+ result.Add("activity", activityId);`
`63`	`63`	`}`
`64`	`64`	`if (registration != null)`
`65`	`65`	`{`