public Artifact createProjectArtifact(String groupId, String artifactId, String version) {
        return createProjectArtifact(groupId, artifactId, version, null);
    }

    @Override
    public Artifact createParentArtifact(String groupId, String artifactId, String version) {
        return createProjectArtifact(groupId, artifactId, version);
    }

    @Override

            return null;
        }

        return artifactFactory.createExtensionArtifact(groupId, artifactId, versionRange);
    }

    public Artifact createParentArtifact(String groupId, String artifactId, String version) {
        return artifactFactory.createParentArtifact(groupId, artifactId, version);
    }

    @Override
    public Artifact createPluginArtifact(Plugin plugin) {
        String version = plugin.getVersion();