// currently processing the entry point - it should not have any entry incident edges
                        res.getEntry().getMd().setWhy("This is a graph entry point. No links.");
                    } else {
                        // System.out.println("--->"+v.getMd().toDomainString()
                        // +" has been terminated on this entry set\n-------------------\n"
                        // +ins

                for (MetadataGraphEdge e : sortedExits) {
                    MetadataGraphVertex targetNode = e.getTarget();
                    targetNode.getMd().setArtifactScope(e.getScope());
                    targetNode.getMd().setWhy(e.getSource().getMd().toString());
                    visit(targetNode);
                }
            }
        }

    }

    // ---------------------------------------------------------------------
    public int compareTo(MetadataGraphVertex vertex) {
        if (vertex == null || vertex.getMd() == null) {
            return 1;
        }

        ArtifactMetadata vmd = vertex.getMd();

        if (vmd == null) {
            if (md == null) {
                return 0;
            } else {
                return 1;
            }

        if (!vertices.contains(vertex)) {
            vertices.add(vertex);
        }

        if (parentVertex != null) // then create the edge
        {
            ArtifactMetadata md = node.getMd();
            MetadataGraphEdge e =
                    new MetadataGraphEdge(md.version, md.resolved, md.artifactScope, md.artifactUri, depth, pomOrder);
            addEdge(parentVertex, vertex, e);
        } else {

    public boolean hasChildren() {
        return children != null;
    }
    // ------------------------------------------------------------------------
    public ArtifactMetadata getMd() {
        return md;
    }

    public void setMd(ArtifactMetadata md) {
        this.md = md;
    }

    public MetadataTreeNode getParent() {
        return parent;
    }

                        problems.add(new DefaultSettingsProblem(
                                "Legacy/insecurely encrypted password detected for server " + server.getId(),
                                Severity.WARNING,
                                "server: " + server.getId(),
                                -1,
                                -1,
                                null));
                    }

                            }
                        }
                    }
                }

                // org.eclipse.aether.ConfigurationProperties.HTTP_HEADERS => Map<String, String>
                if (headers != null) {
                    configProps.put(ConfigurationProperties.HTTP_HEADERS + "." + server.getId(), headers);
                }

                    logger.warn(
                            "Duplicated lifecycle phase {}. Defined in {} but also in {}",
                            phase,
                            original.getId(),
                            lifecycle.getId());
                }
            }
            if (lifecycle.getDelegate() != null) {
                for (org.apache.maven.api.Lifecycle.Alias alias :

                if (!repos.containsKey(repo.getId())) {
                    repos.put(repo.getId(), repo);
                }
            }

            for (ArtifactRepository repo : pomRepositories) {
                if (!repos.containsKey(repo.getId())) {
                    repos.put(repo.getId(), repo);
                }
            }

    @Override
    public MavenExecutionRequest addProxy(Proxy proxy) {
        Objects.requireNonNull(proxy, "proxy cannot be null");

        for (Proxy p : getProxies()) {
            if (p.getId() != null && p.getId().equals(proxy.getId())) {
                return this;
            }
        }

        getProxies().add(proxy);

        return this;
    }

    @Override