code: protected Properties initDefaultOptions() {
  		Properties defaultValues = new Properties();
  		defaultValues.putAll(defaults);
  
  		// See if there's an aggregator.properties in the class loader's root
  		ClassLoader cl = OptionsImpl.class.getClassLoader();
  		URL url = cl.getResource(getPropsFilename());
  		if (url != null) {
  			loadFromUrl(defaultValues, url);
  		}
  
  		// If the bundle defines properties, then load those too
  		if(aggregator != null){
  			url = aggregator.getPlatformServices().getResource(getPropsFilename());
  			if (url != null) {
  				loadFromUrl(defaultValues, url);
  			}
  		}
  		Map<String, String> map = new HashMap<String, String>();
  		for (String name : defaultValues.stringPropertyNames()) {
  			map.put(name, (String)defaultValues.getProperty(name));
  		}
  		defaultOptionsMap = Collections.unmodifiableMap(map);
  
  		return defaultValues;
  	}
docs: Returns the default options for this the aggregator service.
  
  @return The default options.