request.setBuilderId("multithreaded");
                request.setDegreeOfConcurrency(degreeOfConcurrency);
            }
        }

        //
        // Allow the builder to be overridden by the user if requested. The builders are now pluggable.
        //
        if (context.invokerRequest.options().builder().isPresent()) {

        copy.setNoSnapshotUpdates(original.isNoSnapshotUpdates());
        copy.setExecutionListener(original.getExecutionListener());
        copy.setUseLegacyLocalRepository(original.isUseLegacyLocalRepository());
        copy.setBuilderId(original.getBuilderId());
        copy.setStartTime(original.getStartTime());
        return copy;
    }

    @Override
    public String getBaseDirectory() {
        if (basedir == null) {

    /**
     * Controls the {@link org.apache.maven.lifecycle.internal.builder.Builder} used by Maven by specification
     * of the builder's id.
     *
     * @since 3.2.0
     */
    MavenExecutionRequest setBuilderId(String builderId);

    /**
     * Controls the {@link org.apache.maven.lifecycle.internal.builder.Builder} used by Maven by specification
     * of the builders id.
     *
     * @since 3.2.0
     */

            if (degreeOfConcurrency > 1) {
                request.setBuilderId("multithreaded");
                request.setDegreeOfConcurrency(degreeOfConcurrency);
            }
        }

        //
        // Allow the builder to be overridden by the user if requested. The builders are now pluggable.
        //
        request.setBuilderId(commandLine.getOptionValue(CLIManager.BUILDER, request.getBuilderId()));