src/Traits/Strings/PostalCodeTrait.php
public function getPostalCode() : ?string 
    {
        if ( ! $this->hasPostalCode()) {
            $this->setPostalCode($this->getDefaultPostalCode());
        }
        return $this->postalCode;
    }
public function getPostalCode() : ?string 
    {
        if ( ! $this->hasPostalCode()) {
            $this->setPostalCode($this->getDefaultPostalCode());
        }
        return $this->postalCode;
    }
public function getPostalCode ( ) : ? string { if ( ! $ this -> hasPostalCode ( ) ) { $ this -> setPostalCode ( $ this -> getDefaultPostalCode ( ) ) ; } return $ this -> postalCode ; }
Get postal code

If no "postal code" value has been set, this method will
set and return a default "postal code" value,
if any such value is available

@see getDefaultPostalCode()

@return string|null postal code or null if no postal code has been set
Get postal code