createUniqueName( originalName ) {

    		const sanitizedName = PropertyBinding.sanitizeNodeName( originalName || '' );

    		let name = sanitizedName;

    		for ( let i = 1; this.nodeNamesUsed[ name ]; ++ i ) {

    			name = sanitizedName + '_' + i;

    		}

    		this.nodeNamesUsed[ name ] = true;

    		return name;

    	}
When Object3D instances are targeted by animation, they need unique names.