/**
* Unregister this species from the boids graph.
*
* <p>This removes all boids pertaining to this species, and release the link with the graph.
*/
public void release() {
pop.release();
Iterator<Node> i = ctx.getNodeIterator();
while (i.hasNext()) {
Boid b = (Boid) i.next();
if (b.getSpecies() == this) {
i.remove();
}
}
}
