public function __construct() {

		$this->engagement_type = 'certificate';
		$this->award_template_row_actions(); // defined in LLMS_Trait_Award_Templates_Post_List_Table.

		if ( ! llms_is_block_editor_supported_for_certificates() ) {
			return;
		}

		$post_types = array( 'llms_certificate', 'llms_my_certificate' );
		if ( in_array( llms_filter_input( INPUT_GET, 'post_type' ), $post_types, true ) ) {
			add_filter( 'display_post_states', array( $this, 'add_states' ), 20, 2 );
			add_filter( 'post_row_actions', array( $this, 'add_actions' ), 20, 2 );
		}

		if ( 1 === (int) llms_filter_input( INPUT_GET, self::MIGRATE_ACTION, FILTER_SANITIZE_NUMBER_INT ) ) {
			add_filter( 'llms_certificate_template_version', array( $this, 'upgrade_template' ), 10 );
		}

		add_filter( 'manage_llms_my_certificate_posts_columns', array( $this, 'mod_cols' ), 10, 1 );

	}