code: private boolean attributeExists(Class<?> aClass,Attribute attribute){
  		if(!classExists(aClass))return false;
  		for (XmlAttribute xmlAttribute : findXmlClass(aClass).attributes) 
  			if(xmlAttribute.name.equals(attribute.getName()))return true;
  		
  		return false;
  	}
docs: This method returns true if the attribute exist in the Class given in input, returns false otherwise.
  @param aClass Class of the Attribute
  @param attribute Attribute to check
  @return true if attribute exist, false otherwise