code: public String getParameterValue(String name) throws RepositoryConfigurationException
     {
        String value = getParameterValue(name, null);
        if (value == null)
           throw new RepositoryConfigurationException("Parameter " + name + " not found ");
        return value;
     }
docs: Parse named parameter.
  
  @param name
  parameter name
  @return String
  @throws RepositoryConfigurationException