code: function( option ) {
          if ( option ) {
            if ( context.$select_field.val() !== option['real-value'] ) {
              context.$select_field.val( option['real-value'] );
              context.$select_field.change();
            }
          } else {
            var option_name = context.$text_field.val().toLowerCase();
            var matching_option = { 'real-value': false };
            for (var i=0; i < context.options.length; i++) {
              if ( option_name === context.options[i]['label'].toLowerCase() ) {
                matching_option = context.options[i];
                break;
              }
            };
            if ( context.$select_field.val() !== matching_option['real-value'] ) {
              context.$select_field.val( matching_option['real-value'] || '' );
              context.$select_field.change();
            }
            if ( matching_option['real-value'] ) {
              context.$text_field.val( matching_option['label'] );
            }
            if ( typeof context.settings['handle_invalid_input'] === 'function' && context.$select_field.val() === '' ) {
              context.settings['handle_invalid_input']( context );
            }
          }
        }
docs: update the select field value using either selected option or current input in the text field