moveProxy method
Call MoveProxy as many times as you like, then when you are done call updatePairs to finalized the proxy pairs (for your time step).
Implementation
@override
void moveProxy(int proxyId, AABB aabb, Vector2 displacement) {
final buffer = _tree.moveProxy(proxyId, aabb, displacement);
if (buffer) {
_moveBuffer.add(proxyId);
}
}