An example of composition in C#

Composition.cs

using System;

public interface IMovement
{
  void Fly();
}

public class AerialMovement : IMovement
{
  public static void Fly()
  {
    Console.WriteLine("Zoooooommm!");
  }
}

public class Airplane
{
  private readonly IMovement _movement;

  public Airplane(IMovement movement)
  {
    _movement = movement;
  }

  public static void Fly()
  {
    return _movement.Fly();
  }
}

public class Canary
{
  private readonly IMovement _movement;

  public Canary(IMovement movement)
  {
    _movement = movement;
  }

  public static void Fly()
  {
    return _movement.Fly();
  }
  
  public static void Sing()
  {
    Console.WriteLine("Tweet tweet!");
  }
}

var aerialMovement = new AerialMovment();

var 737 = new Airplane(aerialMovement);
var tweety = new Canary(aerialMovement);

737.Fly();

tweety.Fly();
tweety.Sing();