src/Smalot/Magento/Order/OrderInvoice.php
public function addComment($invoiceIncrementId, $comment = null, $email = null, $includeComment = null)
    {
        return $this->__createAction('order_invoice.addComment', func_get_args());
    }
public function addComment($invoiceIncrementId, $comment = null, $email = null, $includeComment = null)
    {
        return $this->__createAction('order_invoice.addComment', func_get_args());
    }
public function addComment ( $ invoiceIncrementId , $ comment = null , $ email = null , $ includeComment = null ) { return $ this -> __createAction ( 'order_invoice.addComment' , func_get_args ( ) ) ; }
Allows you to add a new comment to the order invoice.

@param string $invoiceIncrementId
@param string $comment
@param int    $email
@param int    $includeComment

@return ActionInterface
Allows you to add a new comment to the order invoice .