code: public void addImportVersionClass(I_CmsImport importVersionClass) {
  
          if (LOG.isDebugEnabled()) {
              LOG.debug(
                  Messages.get().getBundle().key(Messages.LOG_IMPORTEXPORT_ADDED_IMPORT_VERSION_1, importVersionClass));
          }
          m_importVersionClasses.add(importVersionClass);
      }
docs: Adds a import version class name to the configuration.<p>
  
  @param importVersionClass the import version class name to add