isItalianLeadingZero() public method

Returns whether this phone number uses an italian leading zero.
public isItalianLeadingZero ( ) : boolean | null
return boolean | null True if it uses an italian leading zero, false it it does not, null if not set.
 /**
  * Returns true if a number is from a region whose national significant number couldn't contain a
  * leading zero, but has the italian_leading_zero field set to true.
  */
 private function hasUnexpectedItalianLeadingZero(PhoneNumber $number)
 {
     return $number->isItalianLeadingZero() && !$this->isLeadingZeroPossible($number->getCountryCode());
 }