Unity Serialization & Interfaces

Interfaces.cs

// I'd like to serialize the GetComponents result straight away when getting components via interface
// That would avoid allocating more memory for another list that can be serialized

// signature: void GetComponents<T, K> (List<T> result) where T : Component;

public class MyBehaviour : MonoBehaviour, ICustom { 
  List<MonoBehaviour> behaviours = new List<MonoBehaviour> ();
  
  void Awake () {
    GetComponents<MonoBehaviour, ICustom> (behaviours);
  }
}