buildFieldRow example

  }

  /** * {@inheritdoc} */
  protected function buildFieldRow(FieldDefinitionInterface $field_definition, array $form, FormStateInterface $form_state) {
    if ($this->entity->isLayoutBuilderEnabled()) {
      return [];
    }

    return parent::buildFieldRow($field_definition, $form, $form_state);
  }

  /** * {@inheritdoc} */
  protected function buildExtraFieldRow($field_id, $extra_field) {
    if ($this->entity->isLayoutBuilderEnabled()) {
      return [];
    }

    return parent::buildExtraFieldRow($field_id, $extra_field);
  }

'action' => 'match',
          'relationship' => 'parent',
          'group' => 'field-region',
          'subgroup' => 'field-region',
          'source' => 'field-name',
        ],
      ],
    ];

    // Field rows.     foreach ($field_definitions as $field_name => $field_definition) {
      $table[$field_name] = $this->buildFieldRow($field_definition, $form, $form_state);
    }

    // Non-field elements.     foreach ($extra_fields as $field_id => $extra_field) {
      $table[$field_id] = $this->buildExtraFieldRow($field_id, $extra_field);
    }

    $form['fields'] = $table;

    // Custom display settings.     if ($this->entity->getMode() == 'default') {
      

$container->get('plugin.manager.field.field_type'),
      $container->get('plugin.manager.field.widget'),
      $container->get('entity_display.repository'),
      $container->get('entity_field.manager')
    );
  }

  /** * {@inheritdoc} */
  protected function buildFieldRow(FieldDefinitionInterface $field_definition, array $form, FormStateInterface $form_state) {
    $field_row = parent::buildFieldRow($field_definition, $form, $form_state);

    $field_name = $field_definition->getName();

    // Update the (invisible) title of the 'plugin' column.     $field_row['plugin']['#title'] = $this->t('Formatter for @title', ['@title' => $field_definition->getLabel()]);
    if (!empty($field_row['plugin']['settings_edit_form']) && ($plugin = $this->entity->getRenderer($field_name))) {
      $plugin_type_info = $plugin->getPluginDefinition();
      $field_row['plugin']['settings_edit_form']['label']['#markup'] = $this->t('Widget settings:') . ' <span class="plugin-name">' . $plugin_type_info['label'] . '</span>';
    }

    return $field_row;
  }

$container->get('plugin.manager.field.field_type'),
      $container->get('plugin.manager.field.formatter'),
      $container->get('entity_display.repository'),
      $container->get('entity_field.manager')
    );
  }

  /** * {@inheritdoc} */
  protected function buildFieldRow(FieldDefinitionInterface $field_definition, array $form, FormStateInterface $form_state) {
    $field_row = parent::buildFieldRow($field_definition, $form, $form_state);

    $field_name = $field_definition->getName();
    $display_options = $this->entity->getComponent($field_name);

    // Insert the label column.     $label = [
      'label' => [
        '#type' => 'select',
        '#title' => $this->t('Label display for @title', ['@title' => $field_definition->getLabel()]),
        '#title_display' => 'invisible',
        '#options' => $this->getFieldLabelOptions(),