private static boolean haveAnyChannel(FbxAnimNode anims) {
        return anims != null && anims.haveAnyChannel();
    }
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