parse( json, onLoad ) {

		this._nodesJSON = json.nodes;

		const data = super.parse( json, onLoad );

		this._nodesJSON = null; // dispose

		return data;

	}
Parses the node objects from the given JSON.

@param {Object} json - The JSON definition
@param {Function} onLoad - The onLoad callback function.
@return {Object3D}. The parsed 3D object.