code: public static RamlRoot loadRamlFromFile(String ramlFileUrl) {
  		try {
  			return createRamlModelFactoryFor(ramlFileUrl).buildRamlRoot(ramlFileUrl);
  		} catch (NullPointerException npe) {
  			logger.error("File not found at {}", ramlFileUrl);
  			return null;
  		}
  	}
docs: Loads a RAML document from a file. This method will
  
  @param ramlFileUrl
  The path to the file, this can either be a resource on the
  class path (in which case the classpath: prefix should be
  omitted) or a file on disk (in which case the file: prefix
  should be included)
  @return Built Raml model
  @throws InvalidRamlResourceException
  If the Raml Provided isnt correct for the required parser