How can I make an OBJ + MTL loaded doublesided?

Questions
1

Hi,
with the loader bellow the obj and mtl files are loaded, so how can I access the material and make it doublesided?
If I use mtlLoader.setMaterialOptions(side: THREE.DoubleSide) as in the following threejs.org documentation page, it doesn’t work -and I’m not getting any hinting from VScode about the .setMaterialOptions either.

https://threejs.org/docs/#examples/loaders/MTLLoader

Here’s the main part of the obj+mtl loader:

			var mtlLoader = new THREE.MTLLoader();
			mtlLoader.setPath( 'female02/' );
			//mtlloader.setMaterialOptions(side:THREE.DoubleSide)				
			mtlLoader.load( 'female02.mtl', function( materials ) {					
				materials.preload();					

				var objLoader = new THREE.OBJLoader();
				objLoader.setMaterials( materials );
				objLoader.setPath( 'female02/' );
				objLoader.load( 'female02.obj', function ( object ) {
					object.position.set( 0, -95, 0 );					
					sceneRTT.add( object );
				}, onProgress, onError );

			});
2

Solution: curly braces were needed -that should have been mentioned on the documentation:
mtlLoader.setMaterialOptions({side: THREE.DoubleSide}) ;

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