<configuration>
              <module>com.google.common.GuavaTests</module>
              <includes>**/GwtTestSuite.java</includes>
              <logLevel>${gwt.logLevel}</logLevel>
              <mode>htmlunit</mode>
              <htmlunit>FF38</htmlunit>
              <productionMode>true</productionMode>
              <!-- Fix OutOfMemoryError under Travis. -->

    /**
     * Sets the OpenSearch runner for embedded mode.
     *
     * @param runner the OpenSearch runner instance
     */
    public void setRunner(final OpenSearchRunner runner) {
        this.runner = runner;
    }

    /**
     * Checks if the search engine is running in embedded mode.
     *
     * @return true if running in embedded mode, false otherwise
     */
    public boolean isEmbedded() {