this.systemProperties = systemProperties;
            return this;
        }

        public ModelBuilderRequestBuilder userProperties(Map<String, String> userProperties) {
            this.userProperties = userProperties;
            return this;
        }

        public ModelBuilderRequestBuilder repositoryMerging(RepositoryMerging repositoryMerging) {

        return this;
    }

    @Override
    public MavenExecutionRequest setUserProperties(Properties userProperties) {
        if (userProperties != null) {
            this.userProperties = new Properties();
            this.userProperties.putAll(userProperties);
        } else {
            this.userProperties = null;
        }

        return this;
    }

    @Override

            MavenPropertiesLoader.loadProperties(userProperties, propertiesFile, callback, false);
        } catch (IOException e) {
            throw new IllegalStateException("Error loading properties from " + propertiesFile, e);
        }

        // CLI specified properties are most dominant
        userProperties.putAll(userSpecifiedProperties);

        return toMap(userProperties);
    }

            Properties executionProperties,
            Properties userProperties,
            Date startTime) {
        this.container = container;
        this.settings = settings;
        this.executionProperties = executionProperties;
        this.request = new DefaultMavenExecutionRequest();
        this.request.setUserProperties(userProperties);
        this.request.setLocalRepository(localRepository);

     * line.
     *
     * @param userProperties The user properties, may be {@code null}.
     * @return This request, never {@code null}.
     */
    ModelBuildingRequest setUserProperties(Properties userProperties);

    /**
     * Gets the start time of the build.
     *

     * line.
     *
     * @param userProperties The user properties, may be {@code null}.
     * @return This request, never {@code null}.
     */
    MavenExecutionRequest setUserProperties(Properties userProperties);

    /**
     * Gets the user properties to use for interpolation and profile activation. The user properties have been

        this.commandLine = requireNonNull(commandLine);
    }

    @Override
    public String source() {
        return source;
    }

    @Override
    public Optional<Map<String, String>> userProperties() {
        if (commandLine.hasOption(CLIManager.USER_PROPERTY)) {
            return Optional.of(toMap(commandLine.getOptionProperties(CLIManager.USER_PROPERTY)));
        }
        return Optional.empty();
    }

        data.put("workingDirectory", context.cwd.get().toString());
        data.put("systemProperties", toProperties(context.protoSession.getSystemProperties()));
        data.put("userProperties", toProperties(context.protoSession.getUserProperties()));
        data.put("versionProperties", CLIReportingUtils.getBuildProperties());
        context.eventSpyDispatcher.init(() -> data);
    }

        request.session(iSession);
        request.source(src);
        request.locationTracking(false);
        request.systemProperties(session.getSystemProperties());
        request.userProperties(session.getUserProperties());
        request.lifecycleBindingsInjector(lifecycleBindingsInjector::injectLifecycleBindings);
        ModelBuilder.ModelBuilderSession mbSession =