/// <summary>
/// Get access token for accessing the resource.
/// </summary>
/// <param name="key"></param>
/// <param name="forceRefresh"></param>
/// <returns>Access token as an awaitable Task.</returns>
public async Task <string> GetToken(string key, bool forceRefresh)
{
var token = await botData.GetTokenAsync(this.authOptions, this.authProvider, CancellationToken.None);
if (token == null)
{
await botData.LogoutAsync(this.authProvider, CancellationToken.None);
}
return(token);
}