public async Task <TReturn> GetData <TReturn>(IDictionary <string, TReturn> dictionary, string key, CancellationToken token)
{
return(await Task.Run(() =>
{
ThrowErrorIf.
IsEmptyOrNullString(key, nameof(key), nameof(GetData));
dictionary.TryGetValue(key, out var result);
return result;
}, token).
ConfigureAwait(false));
}
public void ThrowErrorIf_IsEmptyOrNullString() =>
Assert.Throws <ArgumentNullException>(() => ThrowErrorIf.IsEmptyOrNullString("", string.Empty, string.Empty));
