public function newDeclaration(Client $client)
 {
     $this->clients[] = $client;
     $this->declarations[] = new Declaration($client, $client->getAssetsList());
     $s = new Service($this->employees[0], $client, 'Declaration');
     $this->services[] = $s;
     self::store($s, 'Declaration', count($this->services));
     self::store($client, 'TaxPayers', count($this->clients));
 }