public function setZipCode( $zipCode )
    {
        $zipCode = preg_replace( '/\D/', '', $zipCode );

        if (empty( $zipCode )) {
            throw new InvalidArgumentException( 'ZipCode is empty!' );
        }

        $this->zipCode = $zipCode;

        return $this;
    }
public function setZipCode( $zipCode )
    {
        $zipCode = preg_replace( '/\D/', '', $zipCode );

        if (empty( $zipCode )) {
            throw new InvalidArgumentException( 'ZipCode is empty!' );
        }

        $this->zipCode = $zipCode;

        return $this;
    }
@param  string $zipCode

@return $this