private List<Artifact> collectArtifacts( String hint )
    {
        List<Artifact> artifacts = new ArrayList<>();

        PluginManagement pluginManagement = project.getBuild().getPluginManagement();
        if ( pluginManagement != null )
        {
            artifacts.addAll( getCheckstylePluginDependenciesAsArtifacts( pluginManagement.getPluginsAsMap(), hint ) );
        }

        artifacts.addAll( getCheckstylePluginDependenciesAsArtifacts( project.getBuild().getPluginsAsMap(), hint ) );

        return artifacts;
    }

    private List<Artifact> getCheckstylePluginDependenciesAsArtifacts( Map<String, Plugin> plugins, String hint )
    {
        List<Artifact> artifacts = new ArrayList<>();
        
        Plugin checkstylePlugin = plugins.get( plugin.getGroupId() + ":" + plugin.getArtifactId() );
        if ( checkstylePlugin != null )
        {
            for ( Dependency dep : checkstylePlugin.getDependencies() )
            {
             // @todo if we can filter on hints, it should be done here...
                String depKey = dep.getGroupId() + ":" + dep.getArtifactId();
                artifacts.add( plugin.getArtifactMap().get( depKey ) );
            }
        }
        return artifacts;
    }