private SkinBuffers getSkinBuffers(String bufferType) {
        int bufIndex = getIndex(bufferType);
        SkinBuffers buffs = skinBuffers.get(bufIndex);
        if (buffs == null) {
            buffs = new SkinBuffers();
            skinBuffers.put(bufIndex, buffs);
        }
        return buffs;
    }
GLTF 2.0 loader
Created by Nehon on 07/08/2017.
jme3-plugins/src/gltf/java/com/jme3/scene/plugins/gltf/GltfLoader.java