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