* @param wallTime The wall time of the project in milliseconds.
     */
    protected BuildSummary(MavenProject project, Duration execTime, Duration wallTime) {
        this.project = Objects.requireNonNull(project, "project cannot be null");
        // TODO Validate for < 0?
        this.execTime = execTime;
        this.wallTime = wallTime;
    }

    /**

     * @param execTime The exec time of the project in milliseconds.
     * @param wallTime The wall time of the project in milliseconds.
     * @param cause The cause of the build failure, may be {@code null}.
     */
    public BuildFailure(MavenProject project, Duration execTime, Duration wallTime, Throwable cause) {
        super(project, execTime, wallTime);
        this.cause = cause;
    }

    /**

     *
     * @param project The project being summarized, must not be {@code null}.
     * @param wallTime The wall time of the project in milliseconds.
     * @param execTime The exec time of the project in milliseconds.
     */
    public BuildSuccess(MavenProject project, Duration wallTime, Duration execTime) {
        super(project, wallTime, execTime);
    }