code: private static CtClass[] toCtClass(Class<?>... classes) throws Exception{
  		ClassPool cp = ClassPool.getDefault();
  		
  		if(isEmpty(classes) || isNull(classes[0])) 
  			return null;
  		
  		CtClass[] parameters = new CtClass[classes.length];
  		for(int i=0;i<classes.length;i++)
  			parameters[i]=cp.get(classes[i].getName());
  		
  		return parameters;
  	}
docs: This method transforms classes in CtClass[]
  @param classes
  @return CtClass[] version of classes parameter
  @throws Exception in case of not found class