@Override
    public void glDrawArraysInstancedARB(final int mode, final int first, final int count, final int primCount) {
        ARBDrawInstanced.glDrawArraysInstancedARB(mode, first, count, primCount);
    }
The LWJGL implementation og {@link GLExt}.
jme3-lwjgl3/src/main/java/com/jme3/renderer/lwjgl/LwjglGLExt.java