docs: private boolean loadImporterBundle(Properties moduleProperties){
          String importModuleName = moduleProperties.getProperty(ImportDataProcessor.IMPORT_MODULE);
          String attrs[] = importModuleName.split("\\|");
          String bundleJar = attrs[1];
          String moduleType = attrs[0];
  
          try {
              AbstractImporterFactory importerFactory = m_loadedBundles.get(bundleJar);
              if (importerFactory == null) {
                  if (moduleType.equalsIgnoreCase("osgi")) {
                      URI bundleURI = URI.create(bundleJar);
                      importerFactory = m_moduleManager.getService(bundleURI, AbstractImporterFactory.class);
                      if (importerFactory == null) {
                          importLog.error("Failed to initialize importer from: " + bundleJar);
                          return false;
                      }
                  } else {
                      // class based importer.
                      Class<?> reference = this.getClass().getClassLoader().loadClass(bundleJar);
                      if (reference == null) {
                          importLog.error("Failed to initialize importer from: " + bundleJar);
                          return false;
                      }
                      importerFactory = (AbstractImporterFactory)reference.newInstance();
                  }
                  String importerType = importerFactory.getTypeName();
                  if (importerType == null || importerType.trim().isEmpty()) {
                      throw new RuntimeException("Importer must implement and return a valid unique name.");
                  }
                  Preconditions.checkState(!m_importersByType.containsKey(importerType),
                          "Importer must implement and return a valid unique name: " + importerType);
                  m_importersByType.put(importerType, importerFactory);
                  m_loadedBundles.put(bundleJar, importerFactory);
              }
          } catch(Throwable t) {
              importLog.error("Failed to configure import handler for " + bundleJar, t);
              Throwables.propagate(t);
          }
          return true;
  }