public function to_string(): string
	{
		return 'oauth_token=' .
			Util::urlencode_rfc3986($this->key) .
			'&oauth_token_secret=' .
			Util::urlencode_rfc3986($this->secret);
	}
public function to_string(): string
	{
		return 'oauth_token=' .
			Util::urlencode_rfc3986($this->key) .
			'&oauth_token_secret=' .
			Util::urlencode_rfc3986($this->secret);
	}
public function to_string ( ) : string { return 'oauth_token=' . Util :: urlencode_rfc3986 ( $ this -> key ) . '&oauth_token_secret=' . Util :: urlencode_rfc3986 ( $ this -> secret ) ; }
generates the basic string serialization of a token that a server
would respond to request_token and access_token calls with
generates the basic string serialization of a token that a server would respond to request_token and access_token calls with