/**
     * Indicates whether to show error stack traces.
     *
     * @return an {@link Optional} containing the boolean flag, or empty if not set
     */
    @Nonnull
    Optional<Boolean> showErrors();

    /**
     * Returns the severity level at which the build should fail.
     *
     * @return an {@link Optional} containing the fail-on-severity string, or empty if not set
     */
    @Nonnull