BlockContent.php

<?php

namespace Drupal\block_content\Plugin\views\wizard;

use Drupal\views\Plugin\views\wizard\WizardPluginBase;

/**
 * Used for creating 'block_content' views with the wizard.
 *
 * @ViewsWizard(
 *   id = "block_content",
 *   base_table = "block_content_field_data",
 *   title = @Translation("Custom Block"),
 * )
 */
class BlockContent extends WizardPluginBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFilters() {
        $filters = parent::getFilters();
        $filters['reusable'] = [
            'id' => 'reusable',
            'plugin_id' => 'boolean',
            'table' => $this->base_table,
            'field' => 'reusable',
            'value' => '1',
            'entity_type' => $this->entityTypeId,
            'entity_field' => 'reusable',
        ];
        return $filters;
    }

}