Tribe__Tickets__Admin__Ticket_History::__construct()
Source
File: src/Tribe/Admin/Ticket_History.php
public function __construct() {
add_filter( 'event_tickets_attendees_table_row_actions', array( $this, 'add_history_link' ), 10, 2 );
add_action( 'wp_ajax_get_ticket_history', array( $this, 'supply_history' ) );
}