code: @Override
  	public Object canCreate(Object locator) {
  		for (Registration registration : _registrations) {
  			Object thisLocator = registration.getLocator();
  			if (thisLocator.equals(locator))
  				return thisLocator;
  		}
  		return null;
  	}
docs: Checks if this factory is able to create component by given locator.
  
  This method searches for all registered components and returns a locator for
  component it is able to create that matches the given locator. If the factory
  is not able to create a requested component is returns null.
  
  @param locator a locator to identify component to be created.
  @return a locator for a component that the factory is able to create.