using System;

public class Program

{

    public static void Main()

    {

        /// One is ---------- | ---- ICollection<T>

        /// The other is ---- | ---- List<PreferencesResponse>

        ICollection<T> result = default!;

​

        var myPreferences = new List<PreferencesResponse>();

        foreach (var preference in result.Result.ToList())

        {

            var preferencesResponse = new PreferencesResponse()

            {

                Id = preference.Id,

                Status = preference.Status,

                StatusDescription = preference.StatusDescription,

                Priority = preference.Priority

            };

            mySupplierPreferences.Add(preferencesResponse );

        }

    }

}