protected override IEnumerable <PropertyInfo> FilterProperties(Type typeToWrap, ImmutableArray <PropertyInfo> allProperties)
{
var properties = allProperties
.Where(x => x.GetCustomAttribute <MsgPackMapElementAttribute>() != null)
.GroupBy(x => x.GetMapElementName())
.ToDictionary(x => x.Key, x => x.ToArray());
foreach (var pair in properties)
{
if (pair.Value.Length > 1)
{
throw ExceptionUtils.DuplicateMapElement(typeToWrap, pair);
}
yield return(pair.Value[0]);
}
}