public function getAttachmentPdf()
    {
        $response = $this->api->get(
            $this->url() . '/attachment.pdf',
            null,
            'application/json'
        );

        return base64_decode($response->data->content);
    }
public function getAttachmentPdf()
    {
        $response = $this->api->get(
            $this->url() . '/attachment.pdf',
            null,
            'application/json'
        );

        return base64_decode($response->data->content);
    }
public function getAttachmentPdf ( ) { $ response = $ this -> api -> get ( $ this -> url ( ) . '/attachment.pdf' , null , 'application/json' ) ; return base64_decode ( $ response -> data -> content ) ; }
Returns the PDF-file content for the billogram's attachment.

@return string
Returns the PDF - file content for the billogram s attachment .