}
        } else {
            this.systemProperties = null;
        }

        return this;
    }

    @Override
    public Properties getUserProperties() {
        if (userProperties == null) {
            userProperties = new Properties();
        }

        return userProperties;
    }

    @Override

            for (Profile profile : activeExternalProfiles) {
                profileProps.putAll(profile.getProperties());
            }
            profileProps.putAll(profileActivationContext.getUserProperties());
            profileActivationContext.setUserProperties(profileProps);
        }

        problems.setRootModel(inputModel);

            }

            project.getModel().addDependency(dependency);
        }

        @Override
        public void afterSessionStart(MavenSession session) {
            session.getUserProperties().setProperty("injected", "bar");
        }
    }

    public static class InjectReactorDependency extends AbstractMavenLifecycleParticipant {
        @Override

            }
        });

        interpolator.addValueSource(new MapBasedValueSource(context.getProjectProperties()));

        interpolator.addValueSource(new MapBasedValueSource(context.getUserProperties()));

        interpolator.addValueSource(new MapBasedValueSource(context.getSystemProperties()));

        String absolutePath = interpolator.interpolate(path, "");

                    .setLocation(property.getLocation("")));
            return false;
        }

        String sysValue = context.getUserProperties().get(name);
        if (sysValue == null) {
            sysValue = context.getSystemProperties().get(name);
        }

        String propValue = property.getValue();
        if (StringUtils.isNotEmpty(propValue)) {

        finalConfigProperties.putAll(mergedProps);
        finalConfigProperties.putAll(configProps);

        sessionBuilder.setUserProperties(request.getUserProperties());
        sessionBuilder.setSystemProperties(request.getSystemProperties());
        sessionBuilder.setConfigProperties(finalConfigProperties);

        return sessionBuilder;
    }

                .getMavenSession()
                .getRequest();
        request.setRootDirectory(Paths.get("src/test/resources/consumer/simple"));
        request.getUserProperties().setProperty("changelist", "MNG6957");

        Path file = Paths.get("src/test/resources/consumer/simple/simple-parent/simple-weather/pom.xml");

        }

        valueSources.add(modelValueSource1);

        valueSources.add(new MapBasedValueSource(config.getUserProperties()));

        // Overwrite existing values in model properties. Otherwise, it's not possible
        // to define them via command line e.g.: mvn -Drevision=6.5.7 ...

        settingsRequest.setProjectSettingsFile(request.getProjectSettingsFile());
        settingsRequest.setGlobalSettingsFile(request.getGlobalSettingsFile());
        settingsRequest.setUserProperties(request.getUserProperties());
        settingsRequest.setSystemProperties(request.getSystemProperties());

        return build(settingsRequest);
    }

        cliRequest.showErrors = cliRequest.verbose || commandLine.hasOption(CLIManager.ERRORS);

        // LOG COLOR
        String styleColor = cliRequest.getUserProperties().getProperty("style.color", "auto");
        styleColor = cliRequest.getUserProperties().getProperty(Constants.MAVEN_STYLE_COLOR_PROPERTY, styleColor);
        styleColor = commandLine.getOptionValue(CLIManager.COLOR, styleColor);