MySQL generate validator error

Hi, 

I got the validator file empty when generate with MySQL provider.

validator:
    generate: true
    name: '{Model.Name}Validator'
    baseClass: 'AbstractValidator<{Model.Name}>'
    namespace: '{Project.Namespace}.Domain.{Entity.Name}.Validation'
    directory: '{Project.Directory}\Domain\{Entity.Name}\Validation'
    document: true

Cheers