{ Type = { hint : Optional (./properties/hint/Type ) 
, label : Optional (./properties/label/Type ) 
, required : Optional (./properties/required/Type ) 
, value : Optional (./properties/value/Type ) 
} 
, default = { hint = None ((./properties/hint/Type )) 
, label = None ((./properties/label/Type )) 
, required = None ((./properties/required/Type )) 
, value = None ((./properties/value/Type )) 
} 
}