public function setArea_national($area_national = null)
{
// validation for constraint: fractionDigits
if (is_float($area_national) && strlen(substr($area_national, strpos($area_national, '.'))) !== 2) {
throw new \InvalidArgumentException(sprintf('Invalid value, the value must at most contain 2 fraction digits, "%d" given', strlen(substr($area_national, strpos($area_national, '.')))), __LINE__);
}
// validation for constraint: totalDigits
if (is_float($area_national) && strlen(str_replace(array(' ', '.', ',', '-', '+'), '', $area_national)) !== 15) {
throw new \InvalidArgumentException(sprintf('Invalid value, the value must at most contain 15 digits, "%d" given', strlen(substr($area_national, strpos($area_national, '.')))), __LINE__);
}
$this->area_national = $area_national;
return $this;
}