Is there any way to use IReadOnlyCollection <T> / IReadOnlyList <T> with protobuf-net

Question

I understand that when working with collections, protobuf-net requires GetEnumeratorfor serialization and type c Addfor deserialization.

For types that do not have Add, you can set the type of inheritance that runs before deserialization. This works, for example, with IEnumerableand List:

[ProtoContract(ImplicitFields = ImplicitFields.AllPublic)]
public class Sheep
{
    public IEnumerable<string> Children { get; set; }
    public Sheep()
    {
        Children = new List<string>();
    }
}

var dolly = RuntimeTypeModel.Default.DeepClone(new Sheep
{
    Children = new[]
    {
        "Bonnie",
        "Sally",
        "Rosie",
        "Lucy",
        "Darcy",
        "Cotton"
    }
});

However, when I do the same with IReadOnlyCollection(or IReadOnlyList):

[ProtoContract(ImplicitFields = ImplicitFields.AllPublic)]
public class Sheep
{
    public IReadOnlyCollection<string> Children { get; set; }
    public Sheep()
    {
        Children = new List<string>();
    }
}

I get an exception:

Cannot resolve the appropriate Add method to System.Collections.Generic.IReadOnlyCollection`1 [[System.String, mscorlib, Version = 4.0.0.0, Culture = neutral, PublicKeyToken = b77a5c561934e089]]

So, is there a way to make the elements of a protobuf-net IReadOnlyCollection/ element IReadOnlyList?

---

EDIT: : IReadOnlyCollection/IReadOnlyList

Answer 1

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