UserService/UserService.Infrastructure/DataModels/Member.cs

using System.Collections.Generic;

namespace UserService.Infrastructure.DataModels
{
    public abstract class Member : Node
    {
        public ISet<MembersMember> Members { get; set; } = new HashSet<MembersMember>();

        public ISet<MembersMember> MemberOf { get; set; } = null!;
    }
}