code: public XML addClass(Class<?> aClass, Global global){
  		checksClassAbsence(aClass);
  		
  		XmlClass xmlClass = new XmlClass();
  		xmlClass.name = aClass.getName();
  		xmlJmapper.classes.add(xmlClass);
  		addGlobal(aClass, global);
  		return this;
  	}
docs: This method adds aClass with this global mapping and attributes to XML configuration file.<br>
  It's mandatory define at least one attribute, global is optional instead.
  @param aClass Class to adds
  @param global global mapping
  @return this instance