/// <summary>
/// An async method to get auth tokens using refresh token.
/// </summary>
public static Task <LiveLoginResult> RefreshTokenAsync(
string clientId, string clientSecret, string redirectUrl, string refreshToken,
IEnumerable <string> scopes)
{
Debug.Assert(!string.IsNullOrEmpty(clientId));
Debug.Assert(!string.IsNullOrEmpty(redirectUrl));
Debug.Assert(!string.IsNullOrEmpty(refreshToken));
string postContent = LiveAuthUtility.BuildRefreshTokenPostContent(clientId, clientSecret, redirectUrl, refreshToken, scopes);
return(RequestAccessTokenAsync(postContent));
}
