MenuLinkFieldDefinitions.php

<?php

namespace Drupal\Core\Menu;


/**
 * Provides base field definitions for an entity type.
 *
 * @package Drupal\Core\Menu
 */
trait MenuLinkFieldDefinitions {
    
    /**
     * Provides some default values for the definition of all menu link plugins.
     *
     * @var array
     */
    protected $defaults = [
        // (required) The name of the menu for this link.
'menu_name' => 'tools',
        // (required) The name of the route this links to, unless it's external.
'route_name' => '',
        // Parameters for route variables when generating a link.
'route_parameters' => [],
        // The external URL if this link has one (required if route_name is empty).
'url' => '',
        // The static title for the menu link. If this came from a YAML definition
        // or other safe source this may be a TranslatableMarkup object.
'title' => '',
        // The description. If this came from a YAML definition or other safe source
        // this may be be a TranslatableMarkup object.
'description' => '',
        // The plugin ID of the parent link (or NULL for a top-level link).
'parent' => '',
        // The weight of the link.
'weight' => 0,
        // The default link options.
'options' => [],
        'expanded' => 0,
        'enabled' => 1,
        // The name of the module providing this link.
'provider' => '',
        'metadata' => [],
        // Default class for local task implementations.
'class' => 'Drupal\\Core\\Menu\\MenuLinkDefault',
        'form_class' => 'Drupal\\Core\\Menu\\Form\\MenuLinkDefaultForm',
        // The plugin ID. Set by the plugin system based on the top-level YAML key.
'id' => '',
    ];

}