if (parentData == null) {
                currentData = superData;
            } else if (!parentIds.add(parentData.id())) {
                StringBuilder message = new StringBuilder("The parents form a cycle: ");
                for (String parentId : parentIds) {
                    message.append(parentId).append(" -> ");
                }
                message.append(parentData.id());

                                    .getProject();
                        } catch (ProjectBuildingException e) {
                            // MNG-4488 where let invalid parents slide on by
                            if (logger.isDebugEnabled()) {
                                // Message below is checked for in the MNG-2199 core IT.

static void <clinit>(); } org/codehaus/plexus/util/dag/Vertex.class package org.codehaus.plexus.util.dag; public synchronized class Vertex implements Cloneable, java.io.Serializable { private String label; java.util.List children; java.util.List parents; public void Vertex(String); public String getLabel(); public void addEdgeTo(Vertex); public void removeEdgeTo(Vertex); public void addEdgeFrom(Vertex); public void removeEdgeFrom(Vertex); public java.util.List getChildren(); public java.util.List...

                String key = ArtifactUtils.key(artifact);
                keys.add(key);
            }
        }

        public boolean accept(DependencyNode node, List<DependencyNode> parents) {
            Dependency dependency = node.getDependency();
            if (dependency != null) {
                org.eclipse.aether.artifact.Artifact a = dependency.getArtifact();

        final List<Vertex> parents = new ArrayList<>();

        Vertex(String label) {
            this.label = label;
        }

        String getLabel() {
            return label;
        }

        List<Vertex> getChildren() {
            return children;
        }

        List<Vertex> getParents() {
            return parents;
        }
    }