public function getPrivateKeyPassphrase()
    {
        if (isset($this->raw->{'key-pass'})
            && is_string($this->raw->{'key-pass'})) {
            return $this->raw->{'key-pass'};
        }

        return null;
    }
public function getPrivateKeyPassphrase()
    {
        if (isset($this->raw->{'key-pass'})
            && is_string($this->raw->{'key-pass'})) {
            return $this->raw->{'key-pass'};
        }

        return null;
    }
public function getPrivateKeyPassphrase ( ) { if ( isset ( $ this -> raw -> { 'key-pass' } ) && is_string ( $ this -> raw -> { 'key-pass' } ) ) { return $ this -> raw -> { 'key-pass' } ; } return null ; }
Returns the private key passphrase.

@return string The passphrase.
Returns the private key passphrase .