# File lib/authlogic/acts_as_authentic/login.rb, line 130
        def self.included(klass)
          klass.class_eval do
            if validate_login_field && login_field
              validates_length_of login_field, validates_length_of_login_field_options
              validates_format_of login_field, validates_format_of_login_field_options
              validates_uniqueness_of login_field, validates_uniqueness_of_login_field_options
            end
          end
        end