public IComponentFeatureCollection With(IComponentFeature feature)
{
if (feature == null)
{
throw new ArgumentNullException(nameof(feature));
}
if (!_features.Add(feature))
{
throw new InvalidOperationException();
}
return(this);
}
public bool Has(IComponentFeature state)
{
if (state == null)
{
throw new ArgumentNullException(nameof(state));
}
var foundState = _features.FirstOrDefault(s => s.GetType() == state.GetType());
if (foundState == null)
{
throw new ComponentFeatureNotSupportedException(state.GetType());
}
return(ReferenceEquals(state, foundState) || foundState.Equals(state));
}
