using System;

using System.Collections.Generic;

using System.Text.Json;

using System.Text.Json.Serialization;

​

public class Program

{

    public static void Main()

    {

        try

        {

            var json = @"

                [

                    {

                        ""name"": ""General Info"",

                        ""url"": ""/Info"",

                        ""permissions"": []

                    },

                    {

                        ""name"": ""Settings"",

                        ""url"": ""/Settings"",

                        ""permissions"": [

                            ""Admin""

                        ]

                    }

                ]";

            Console.WriteLine(json);

            var menu = new Menu(json);

            Console.WriteLine("Deserialization success");

        }

        catch (Exception ex)

        {

            Console.WriteLine($"Error: {ex.Message}");

        }

    }

}

​

public class Menu

{

    public Menu(string json)

    {

        var items = JsonSerializer.Deserialize<List<MenuItem>>(json);

        MenuItems = items.AsReadOnly();

    }

​

    public IReadOnlyList<MenuItem> MenuItems { get; }

}

​

public class MenuItem

{

    [JsonConstructor]

    public MenuItem

        (

            string name, 

            string url, 

            List<Permission> permissions

        )

    {

        this.Name = name;

        this.Url = url;

        this.Permissions = (permissions ?? new List<Permission>()).AsReadOnly();

    }

​

    public string Name { get; }

    public string Url { get; }

    public IReadOnlyList<Permission> Permissions { get; }

}

​

public enum Permission

{

    Admin,

    FinancialReporting

}