code: public static String getResourceAsURLString(Class<?> requestingClass, String resource)
              throws ResourceMissingException {
          return getResourceAsURL(requestingClass, resource).toString();
      }
docs: Returns the requested resource as a URL string.
  
  @param requestingClass the java.lang.Class object of the class that is attempting to load the
  resource
  @param resource a String describing the full or partial URL of the resource to load
  @return the requested resource as a URL string
  @throws ResourceMissingException