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

     * @param wallTime The wall time of the project in milliseconds.
     * @param execTime The exec time of the project in milliseconds.
     */
    public BuildSuccess(MavenProject project, long wallTime, long execTime) {
        super(project, wallTime, execTime);
    }

     * @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, long execTime, long wallTime, Throwable cause) {
        super(project, execTime, wallTime);
        this.cause = cause;
    }

    /**