public function deletedInvoice(InvoiceWasDeleted $event)
{
$invoice = $event->invoice;
$this->activityRepo->create($invoice, ACTIVITY_TYPE_DELETE_INVOICE, $invoice->affectsBalance() ? $invoice->balance * -1 : 0, $invoice->affectsBalance() ? $invoice->getAmountPaid() * -1 : 0);
}