code: public void setSubfolder(String subfolder) {
  
          if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(subfolder)) {
              m_subfolder = Boolean.valueOf(subfolder).booleanValue();
          }
      }
docs: Sets the subfolder flag.<p>
  
  Online is <code>false</code> by default.<p>
  
  @param subfolder the flag to set