# File lib/devise_ldap_authenticatable/ldap/adapter.rb, line 8
      def self.valid_credentials?(login, password_plaintext)
        options = {:login => login,
                   :password => password_plaintext,
                   :ldap_auth_username_builder => ::Devise.ldap_auth_username_builder,
                   :admin => ::Devise.ldap_use_admin_to_bind}

        resource = Devise::LDAP::Connection.new(options)
        resource.authorized?
      end