*
     * @return an {@link Optional} containing true if error reporting should be deferred to the end, false if not, or empty if not specified
     */
    @Nonnull
    Optional<Boolean> failAtEnd();

    /**
     * Indicates whether Maven should never fail the build, regardless of project result.
     *

        if (commandLine.hasOption(CLIManager.FAIL_FAST)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<Boolean> failAtEnd() {
        if (commandLine.hasOption(CLIManager.FAIL_AT_END)) {
            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override

        if (context.options().failFast().isPresent()) {
            return MavenExecutionRequest.REACTOR_FAIL_FAST;
        } else if (context.options().failAtEnd().isPresent()) {
            return MavenExecutionRequest.REACTOR_FAIL_AT_END;
        } else if (context.options().failNever().isPresent()) {
            return MavenExecutionRequest.REACTOR_FAIL_NEVER;
        } else {