node.clearConstraintEdges(pendingDependencies, removalSource);
                }
            }
        }
    }

    boolean isPending() {
        return pendingDependencies.isPending();
    }

    PendingDependencies getPendingDependencies() {
        return pendingDependencies;
    }

    void registerConstraintProvider(NodeState node) {

     * There may be some incoming edges left at that point, but they must all be coming from constraints.
     */
    public void clearConstraintEdges(PendingDependencies pendingDependencies, NodeState backToPendingSource) {
        if (incomingEdges.isEmpty()) {
            return;
        }