How Do I Get a Script to Reference the GameObject When Using AddComponent?

I am adding a script named “Part” to a part of a 3D model at runtime like this:

private var _Part;

var obj=Parts.transform.Find(partName);
_Part=obj.gameObject;
_Part.AddComponent("Part");
_Part.GetComponent(Part).init(this);          

In the “Part” script I have this:

function init(parentRef){
	this.AddComponent("BoxCollider");
}

but it fails (I think) because “this” doesn’t reference the _Part game object i.e. the game object it is a component of. How can I reference the game object?

The error I get is:

MissingMethodException: Method not found: ‘Part.AddComponent’.

MonoBehaviour scripts can always refer to their gameObject with the property gameObject. Thus this would suffice:

this.gameObject.AddComponent( "BoxCollider" );