Accessible to the client after the validate method has been called.
	# Validation result
	#
	# Accessible to the client after the `validate` method has been called.
	var validation: ValidationResult is noinit
					lib/popcorn/pop_validation.nit:79,2--82,43
				
	redef var validation = new ValidationResult
					lib/popcorn/pop_validation.nit:582,2--44
				
	redef var validation = new ValidationResult
					lib/popcorn/pop_validation.nit:618,2--44