public async Task <ServiceClientCredentials> GetServiceCredentials([NotNull] ClientCredentials credentials, IEnumerable <string> scopes = null)
{
var scopesArray = scopes == null ? new string[0] : scopes.ToArray();
var key = $"{credentials.Id}_{credentials.IdentityProvider}_scopes:{string.Join(",", scopesArray)}";
if (_cache.ContainsKey(key))
{
return(_cache[key]);
}
var serviceClientCredentials = await ApplicationTokenProvider.LogonWithEryphClient(credentials, scopesArray).ConfigureAwait(false);
return(_cache.GetOrAdd(key, serviceClientCredentials));
}