@Override
    public void alDeleteSources(final int numSources, final IntBuffer sources) {
        if (sources.position() != 0) throw new AssertionError();
        if (sources.limit() != numSources) throw new AssertionError();
        AL10.alDeleteSources(sources);
    }
The LWJGL implementation of {@link AL}.
jme3-lwjgl3/src/main/java/com/jme3/audio/lwjgl/LwjglAL.java