code: protected String getConfigValue(String key) {
  
          if (m_localizationContent != null) {
              try {
                  return m_localizationContent.getStringValue(null, m_pathPrefix + key, m_locale);
              } catch (NullPointerException e) {
                  // a cms object is needed, log this error
                  if (LOG.isErrorEnabled()) {
                      LOG.error(Messages.get().getBundle().key(Messages.ERR_NULL_CMSOBJECT_0));
                  }
              }
          }
          return null;
      }
docs: Returns the value for the given key from the configuration file.<p>
  @param key the key to get the value for
  @return the value for the given key