/// <summary>
/// Authenticate user and get user's credentials using one-time use access token.
///
/// One-time use access token is a session identifier which will be deleted after first usage.
/// This method can be called only once in authentication process.
/// </summary>
/// <param name="accessToken"></param>
/// <returns></returns>
public Credentials GetCredentials(string accessToken)
{
var credentials = new Credentials(this, accessToken);
credentials.Perform();
return credentials;
}
