Use local accessToken instead of instance's Token

Author: Stanislav Rehak

Git.hub/OAuth2Helper.cs

@@ -56,7 +56,7 @@ public OAuth2AuthHelper(string token) : base(token) { }
 
         protected override Parameter GetAuthenticationParameter(string accessToken)
         {
-            return new Parameter("Authorization", "bearer " + Token, ParameterType.HttpHeader);
+            return new Parameter("Authorization", "bearer " + accessToken, ParameterType.HttpHeader);
         }
     }
 }