    # File lib/ramaze/helper/user.rb, line 185
            def _would_login?(creds)
              if c = @_callback
                c.call(creds)
              elsif _model.respond_to?(:authenticate)
                _model.authenticate(creds)
              else
                Log.warn("Helper::User has no callback and there is no %p::authenticate" % _model)
                nil
              end
            end