Index: Src/GoogleApis.Auth/OAuth2/Requests/RefreshTokenRequest.cs
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new file mode 100644
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+++ b/Src/GoogleApis.Auth/OAuth2/Requests/RefreshTokenRequest.cs
@@ -0,0 +1,37 @@
+/*
+Copyright 2013 Google Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+namespace Google.Apis.Auth.OAuth2.Requests
+{
+ ///
+ /// OAuth 2.0 request to refresh an access token using a refresh token as specified in
+ /// http://tools.ietf.org/html/rfc6749#section-6.
+ ///
+ public class RefreshTokenRequest : TokenRequest
+ {
+ /// Gets or sets the Refresh token issued to the client.
+ [Google.Apis.Util.RequestParameterAttribute("refresh_token")]
+ public string RefreshToken { get; set; }
+
+ ///
+ /// Constructs a new refresh code token request and sets grant_type to refresh_token.
+ ///
+ public RefreshTokenRequest()
+ {
+ GrantType = "refresh_token";
+ }
+ }
+}