RequireComponentAttribute unuseable

[stefnotch]

@xen2 Why can't I use RequireComponentAttribute?
It says:

CS0246	The type or namespace name 'RequireComponentAttribute' could not be found (are you missing a using directive or an assembly reference?)

Code:

var x = typeof(RequireComponentAttribute);

However, AllowMultipleComponentsAttribute works. Both of them are in the same namespace and are supposed to be in the same .dll.

One slightly interesting thing is that the RequireComponentAttribute doesn't seem to get used anywhere.

[stefnotch]

Apparently, it's missing from the .dll.

[xen2]

Not part of the C# project file. Looks like a file that should have been erased.

[stefnotch]

@xen2 Oh, that explains a lot. Though, it seems like a rather convenient attribute. My use case would be something like this:
Force the user to add a camera component to the player entity:

[RequireComponentAttribute(typeof(CameraComponent))]
public class Player: SyncScript
{
    private CameraComponent _camera;
    public void Start() {
         _camera = this.Entity.Get<CameraComponent>();
    }
}

Though, after thinking about it for a while, it would probably be more elegant to use [NotNull] to force the user to add a camera component

public class Player: SyncScript
{
    //Game Studio doesn't seem to check this, which makes it rather useless
    [NotNull]
    public CameraComponent Camera { get; set; }
}

#662