# File lib/glue/property.rb, line 185
        def self.include_meta_mixins(target)
                target.module_eval %{ include N::Validation } if defined?(N::Validation)
                # gmosx: TODO, make Og::MetaLanguage equivalent to Validation.
                target.module_eval %{ extend Og::MetaLanguage } if defined?(Og::MetaLanguage)
        end