public function setStoreys_count($storeys_count = null)
{
// validation for constraint: int
if (!is_null($storeys_count) && !is_numeric($storeys_count)) {
throw new \InvalidArgumentException(sprintf('Invalid value, please provide a numeric value, "%s" given', gettype($storeys_count)), __LINE__);
}
$this->storeys_count = $storeys_count;
return $this;
}