public function connect() {
		if (! isset ( $this->apiTokens )) {
			$this->apiTokens = $this->_loadApiTokens ();
		}
		$token = $this->apiTokens->addToken ();
		$this->_addHeaderToken ( $token );
		return [ "access_token" => $token,"token_type" => "Bearer","expires_in" => $this->apiTokens->getDuration () ];
	}