public void updateParent(SourceToGoalQEntry newParent, int costOfEdge)
{
this.sourceEdge = newParent;
this.sourceToNodeCost = newParent.sourceToNodeCost + costOfEdge;
newParent.updateChild(this);
}
private void updateChild(SourceToGoalQEntry newChild)
{
this.goalEdge = newChild;
}