}
        } else {
            this.systemProperties = null;
        }

        return this;
    }

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

        return userProperties;
    }

    @Override

        copy.setRecursive(original.isRecursive());
        copy.setPom(original.getPom());
        copy.setSystemProperties(original.getSystemProperties());
        copy.setUserProperties(original.getUserProperties());
        copy.setShowErrors(original.isShowErrors());
        copy.setActiveProfiles(original.getActiveProfiles());
        copy.setInactiveProfiles(original.getInactiveProfiles());

     * on his discretion, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @return The user properties, never {@code null}.
     */
    Properties getUserProperties();

    /**
     * Sets the user properties to use for interpolation. The user properties have been configured directly by the user

        } else {
            this.systemProperties = Collections.emptyMap();
        }

        return this;
    }

    @Override
    public Map<String, String> getUserProperties() {
        return userProperties;
    }

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

     * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
     * line.
     *
     * @return The user properties, never {@code null}.
     */
    Properties getUserProperties();

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

     * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
     * line.
     *
     * @return The user properties, never {@code null}.
     */
    Properties getUserProperties();

    // Reactor
    MavenExecutionRequest setReactorFailureBehavior(String failureBehavior);

    String getReactorFailureBehavior();

    /**

        if (request.getUserProperties().containsKey(REVISION_PROPERTY)) {
            modelProperties.put(REVISION_PROPERTY, request.getUserProperties().get(REVISION_PROPERTY));
        }
        if (request.getUserProperties().containsKey(CHANGELIST_PROPERTY)) {
            modelProperties.put(CHANGELIST_PROPERTY, request.getUserProperties().get(CHANGELIST_PROPERTY));
        }

        String revision = request.getUserProperties().getProperty("revision");
        assertEquals("8.2.0", revision);

        assertEquals("bar ", request.getUserProperties().getProperty("foo"));
        assertEquals("bar two", request.getUserProperties().getProperty("foo2"));
        assertEquals("Apache Maven", request.getUserProperties().getProperty("label"));

            request.setRepositorySession(session.getRepositorySession());
            request.setSystemProperties(session.getSystemProperties());
            if (request.getUserProperties().isEmpty()) {
                request.setUserProperties(session.getUserProperties());
            }

            MavenExecutionRequest req = session.getRequest();
            if (req != null) {

        return getActivationPackaging(profile).isPresent();
    }

    private static boolean isPackaging(ProfileActivationContext context, String p) {
        String packaging = context.getUserProperties().get(ProfileActivationContext.PROPERTY_NAME_PACKAGING);
        return Objects.equals(p, packaging);
    }

    private static Optional<String> getActivationPackaging(org.apache.maven.model.Profile profile) {