ds-8.x-3.9/src/Plugin/DsField/Node/NodeTitle.php

<?php

namespace Drupal\ds\Plugin\DsField\Node;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\ds\Attribute\DsField;
use Drupal\ds\Plugin\DsField\Title;

/**
 * Plugin that renders the title of a node.
 */
#[DsField(
  id: 'node_title',
  title: new TranslatableMarkup('Title'),
  entity_type: 'node',
  provider: 'node'
)]
class NodeTitle extends Title {

  /**
   * Constructs a Display Suite field plugin.
   */
  public function __construct($configuration, $plugin_id, $plugin_definition) {
    // Set the title, used to construct the field label, based on the label
    // of the node type's title field.
    if (!empty($configuration['entity'])) {
      /* @var \Drupal\Core\Field\FieldDefinitionInterface $field */
      $field = $configuration['entity']->getFieldDefinition('title');
      $title = $field->getLabel();
      $configuration['field']['title'] = $title;
      $plugin_definition['title'] = $title;
    }

    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }

}