# Simple usage
package Widget {
  use Mom q{ name sku price size };
}

# Complex usage
package Widget {
  use Mom q{
    name  :required   :type(NonEmptyStr)
    sku   :required   :type(NonEmptySimpleStr)
    price :default(0) :type(Num)
    size  :required   :enum(xs,s,m,l,xl)
  };
}