code: public void restoreOriginal() {
      if (original == null) {
        throw new IllegalStateException("Original EbeanServer instance is null");
      }
      if (original.getName() == null) {
        throw new IllegalStateException("Original EbeanServer name is null");
      }
  
      // restore the original EbeanServer back
      Ebean.mock(original.getName(), original, true);
    }
docs: Restore the original EbeanServer implementation as the default EbeanServer.