using System;

using System.Collections.Generic;

using System.Linq;

​

namespace Test

{   

public class Program

{

        public static void Main()

        {

            // Get unique actors list under 45 years old.

            var testData = new[]

            {

                new Movie

                {

                    Name = "Man of Steel",

                    Actors = new List<Actor>

                    {

                        new Actor {Name = "Henry Cavill", Age = 39},

                        new Actor {Name = "Amy Adams", Age = 48},

                        new Actor {Name = "Kevin Michael Costner", Age = 67}

                    }

                },

​

                new Movie

                {

                    Name = "The Dark Knight",

                    Actors = new List<Actor>

                    {

                        new Actor {Name = "Heath Ledger", Age = 43},

                        new Actor {Name = "Christian Charles Philip Bale", Age = 48},

                        new Actor {Name = "Gary Leonard Oldman", Age = 64},

                        new Actor {Name = "Morgan Freeman", Age = 85}

                    }

                },

                new Movie

                {

                    Name = "Black Adam",

                    Actors = new List<Actor>

                    {

                        new Actor {Name = "Henry Cavill", Age = 39},

                        new Actor {Name = "Dwayne Johnson ", Age = 50},

                        new Actor {Name = "Pierce Brosnan ", Age = 69}

                    }

                }

            };

        }

​

        private static void Print(IEnumerable<Actor> actors)

        {

            foreach (var actor in actors)

            {

                Console.WriteLine($"{actor.Name}, Age:{actor.Age}");

            }

        }

​

        public class Actor

        {

            public string Name { get; set; }

            public int Age { get; set; }

        }

​

        public class Movie

        {

            public string Name { get; set; }

            public List<Actor> Actors { get; set; }

        }

    }

 }