public void AddProperty(FacetProperty property)
{
if (this.Properties.Any(p => p.Name.Equals(property.Name)))
{
throw new InvalidOperationException($"duplicate property name: {property.Name}");
}
this.Properties = this.Properties.Union(property.Yield()).ToList();
}
public void RemoveProperty(FacetProperty property)
{
this.Properties = this.Properties.Where(p => !p.Equals(property)).ToList();
}