Issue 351: Reimplement OAuth2 (Step 3 - Tests, Flows and Credential)

Src/GoogleApis.Auth/OAuth2/Responses/TokenResponse.cs

 /*
 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
@@ skipping 47 matching lines @@
 /// It should be set by the CLIENT after the token was received from the
server.
 /// </remarks>·
 /// </summary>
 public DateTime Issued { get; set; }
 
 /// <summary>
 /// Returns <c>true</c> if the token is expired or it's going to be expi
red in the next minute.
 /// </summary>
 public bool IsExpired(IClock clock)
 {
- //TODO(peleyal): consider move it to an extension method
- if (!ExpiresInSeconds.HasValue)
+ if (AccessToken == null || !ExpiresInSeconds.HasValue)
 {
 return true;
 }
 
 return Issued.AddSeconds(ExpiresInSeconds.Value 60) <= clock.Now;
 }
-
-/// <summary>
-/// Copies all properties from the other token, except the other's refre
sh token property in case it's null.
-/// </summary>
-internal void CopyFrom(TokenResponse other)
-{
-AccessToken = other.AccessToken;
-TokenType = other.TokenType;
-ExpiresInSeconds = other.ExpiresInSeconds;
-if (other.RefreshToken != null)
-{
-RefreshToken = other.RefreshToken;
-}
-Scope = other.Scope;
-Issued = other.Issued;
-}
 }
 }