# __construct()



# implements ArrayAccess







# ->configure()






# ->clean()






# required fields



# ->getPreValidator() ->setPreValidator()




# ->getPostValidator() ->setPostValidator()






# extra fields




# one validator fails



# several validators fail




# postValidator can throw named errors or global errors
# postValidator throws global errors







# postValidator throws named errors







# complex postValidator













# __clone()











# Looks like everything went fine.