if (pluginArtifactMap == null) {
            pluginArtifactMap = ArtifactUtils.artifactMapByVersionlessId(getPluginArtifacts());
        }

        return pluginArtifactMap;
    }

    public void setParentArtifact(Artifact parentArtifact) {
        this.parentArtifact = parentArtifact;
    }

    public Artifact getParentArtifact() {
        return parentArtifact;
    }

            if (parentModel != null) {
                final String parentGroupId = getGroupId(parentModel);
                final String parentVersion = getVersion(parentModel);

                project.setParentArtifact(repositorySystem.createProjectArtifact(
                        parentGroupId, parentModel.getArtifactId(), parentVersion));

                MavenProject parent = projectIndex.get(parentModel.getId());