Issue with BABYLON.SceneLoader.Load

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Hello!  I am having an issue with BABYLON.SceneLoader.Load.  I am able to initialize a file from a local directory no problem.  However, unlike BABYLON.SceneLoader.ImportMesh, which puts the imported meshes into an array, I have no clue what the mesh names would be or how to access them.  I am also for some reason, unable to initialize the debug layer (It works fine when I create the scene using ImportMesh).

The reason I am using SceneLoader.Load instead of SceneLoader.ImportMesh, is because I want each time someone clicks on "New Scene" in the html Navigation, it creates a new scene.  

if (BABYLON.Engine.isSupported()) {
	const canvas = document.getElementById('renderCanvas');
	const engine = new BABYLON.Engine(canvas, true);

	const inputElement = document.getElementById('fileUpload');
		function handleFiles(event) {
			const fileList = this.files[0];
			const reader = new FileReader();

			reader.addEventListener('loadend', () => {
				let data = reader.result;
					'data:' + data,
					function(newScene) {
						// Wait for textures and shaders to be ready
						newScene.executeWhenReady(function() {
							var camera = new BABYLON.ArcRotateCamera(
							camera.setPosition(new BABYLON.Vector3(0, 0, -3));
							newScene.activeCamera = camera;
							newScene.clearColor = new BABYLON.Color3(1, 1, 1);

							let light0 = new BABYLON.HemisphericLight('Hemi0', new BABYLON.Vector3(0, 1, 0), newScene);
							light0.intensity = 0.7;
							light0.diffuse = new BABYLON.Color3(1, 1, 1);
							light0.specular = new BABYLON.Color3(0, 0, 0);
							light0.groundColor = new BABYLON.Color3(0, 0, 0);

							let light1 = new BABYLON.HemisphericLight('Hemi1', new BABYLON.Vector3(0, -1, 0), newScene);
							light1.intensity = 0.7;
							light1.diffuse = new BABYLON.Color3(1, 1, 1);
							light1.specular = new BABYLON.Color3(0, 0, 0);
							light1.groundColor = new BABYLON.Color3(0, 0, 0);

							// Once the scene is loaded, just register a render loop to render it
							engine.runRenderLoop(function() {
							window.addEventListener('resize', () => {
					function(progress) {}


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That method does not return a list of loaded meshes.  Once it's done you can checl all the meshes in the scene - scene.meshes - I'm going to make an assumption that scene.load overwrites all the objects in the scene so you should be safe to use that.  Scene.append - does not discard the existing scene and like the name implies appends the contents to the existing scene.  It might be helpful for that methods - on success callback to return a list of all the items it loaded. 

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Just for clarity I can take scene.meshes (or in this case newScene.meshes)  and get the meshes that are in the scene and wrap them in an array for later use?  Also do you know why the debugger doesn't work with this method?

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