code: public XAttributeContinuous createAttributeContinuous(String key,
  			double value, XExtension extension) {
  		return new XAttributeContinuousImpl(intern(key), value, extension);
  	}
docs: /* (non-Javadoc)
  @see org.deckfour.xes.model.factory.XModelFactory#createAttributeContinuous(java.lang.String, double, org.deckfour.xes.extension.XExtension)