private List<ArtifactRepository> pluginArtifactRepositories;

    private ExecutionListener executionListener;

    private int degreeOfConcurrency = 1;

    private String builderId = "singlethreaded";

    private Map<String, List<ToolchainModel>> toolchains;

    /**
     * Suppress SNAPSHOT updates.
     *
     * @issue MNG-2681
     */
    private boolean noSnapshotUpdates = false;