检测意图中的Dialogflow v2 PhP Set Context

use Google\Cloud\Dialogflow\V2\ContextsClient;
use Google\Cloud\Dialogflow\V2\Context;

function setContext($projectId, $sessionId, $contextId, $lifespanCount) {
    $contextsClient = new ContextsClient();
    $sessionPath = $contextsClient->sessionName($projectId, $sessionId);
    $contextPath = $contextsClient->contextName($projectId, $sessionId, $contextId);

    $context = new Context();
    $context->setName($contextPath);
    $context->setLifespanCount($lifespanCount);

    $contextsClient->createContext($sessionPath, $context);
    $contextsClient->close();
}