code: public static ConfigParams readConfig(String correlationId, String path, ConfigParams parameters)
  			throws ApplicationException {
  		return new JsonConfigReader(path).readConfig(correlationId, parameters);
  	}
docs: Reads configuration from a file, parameterize it with given values and
  returns a new ConfigParams object.
  
  @param correlationId (optional) transaction id to trace execution through
  call chain.
  @param path          a path to configuration file.
  @param parameters    values to parameters the configuration.
  @return ConfigParams configuration.
  @throws ApplicationException when error occured.