private void releaseObjects() {
        // Reset settings
        unitSize = 1;
        animFrameRate = 30;
        xAxis = 1;
        yAxis = 1;
        zAxis = 1;
        // Clear cache
        warnings.clear();
        animList = null;
        sceneName = null;
        sceneFilename = null;
        sceneFolderName = null;
        assetManager = null;
        currentAssetInfo = null;
        // Clear objects
        allObjects.clear();
        skinMap.clear();
        aLayerMap.clear();
        modelMap.clear();
        limbMap.clear();
        bindMap.clear();
        geomMap.clear();
        skeleton = null;
        animControl = null;
        sceneNode = null;
    }
FBX file format loader
<p> Loads scene meshes, materials, textures, skeleton and skeletal animation.
Multiple animations can be defined with {@link AnimationList} passing into {@link SceneKey}
or loaded from different animation layer.</p>
jme3-plugins/src/fbx/java/com/jme3/scene/plugins/fbx/SceneLoader.java