*/ use HasFactory; public function sourceTicket(): BelongsTo { return $this->belongsTo(Ticket::class, 'source_ticket_id'); } public function targetTicket(): BelongsTo { return $this->belongsTo(Ticket::class, 'target_ticket_id'); } public function ticketLinkType(): BelongsTo { return $this->belongsTo(TicketLinkType::class); } }