public async Task <AccessToken?> RequestTokenAsync(
IConsoleOutput output,
CancellationToken cancellationToken)
{
if (Token.HasValue())
{
string?scheme = null;
if (!NoScheme.HasValue())
{
scheme = Scheme.HasValue() ? Scheme.Value() !.Trim() : _defaultScheme;
}
return(new AccessToken(
Token.Value() !.Trim(),
scheme));
}
if (TokenEndpoint.HasValue() || ClientId.HasValue() || ClientSecret.HasValue())
{
using IActivity activity = output.WriteActivity("Request token");
ValidateOAuthArguments(activity);
IEnumerable <string> scopes = Scopes.HasValue()
? Enumerable.Empty <string>()
: Scopes.Values.Where(t => t is { }).OfType <string>();