code: private void computeNamedParams() {
          rawArgs.stream().filter(this::isNamedParam).forEach(arg -> {
              final int eqIdx = arg.indexOf('=');
              String key = arg.substring(2, eqIdx);
              String value = arg.substring(eqIdx + 1);
              namedParams.put(key, value);
          });
      }
docs: This method parses the current array of raw arguments looking for
  name,value pairs. These name,value pairs are then added to the map
  for this parameters object, and are of the form: --name=value.