List<Artifact> mains = new ArrayList<>();
        for (Artifact artifact : artifacts) {
            if ("pom".equals(artifact.getExtension()) || artifact.getExtension().startsWith("pom.")) {
                if (CONSUMER_POM_CLASSIFIER.equals(artifact.getClassifier())) {
                    consumers.add(artifact);
                } else if ("".equals(artifact.getClassifier())) {
                    mains.add(artifact);
                }

            this.type = type;
        }

        @Override
        public String getId() {
            return type.id();
        }

        @Override
        public String getExtension() {
            return type.getExtension();
        }

        @Override
        public String getClassifier() {
            return type.getClassifier() == null ? "" : type.getClassifier();
        }

        @Override

     */
    static String conflictKey(DependencyNode node) {
        var a = node.getArtifact();
        return a.getGroupId() + ':' + a.getArtifactId() + ':' + a.getExtension() + ':' + a.getClassifier();
    }

                    currentType = registry.get(node.getArtifact()
                            .getProperty(
                                    ArtifactProperties.TYPE, node.getArtifact().getExtension()));
                    if (currentType == null) {
                        currentType = jar;
                    }
                }
                if (!stack.isEmpty()) {

            ]]>
          </code>
        </codeSegment>
        <codeSegment>
          <version>4.0.0/4.0.99</version>
          <code>
            <![CDATA[
    public void setExtensions(boolean extensions) {
        setExtensions(String.valueOf(extensions));
    }

    /**
     * Reset the {@code executionMap} field to {@code null}
     */
     @Deprecated
    public void flushExecutionMap() {