code: public static String lookupParameter(String parameter) {
  		if (parameter.startsWith("i18n:")) {
  			String methodName = parameter.substring(5).replace('.', '_');
  			return lookup.getString(methodName);
  		} else {
  			return parameter;
  		}
  	}
docs: Converts a parameter using the application-specific constants. Only converts parameters of the form "${....}".
  
  @param parameter
  parameter to look up (must be of the form "${....}")
  @return the converted parameter (if conformal) or the parameter itself