per minute.</p></td><td>No</td></tr><tr id=Params-app_credentials class="oneof oneof-start"><td><code>appCredentials</code></td><td><code>bool (oneof)</code></td><td><p>Use Google&rsquo;s Application Default Credentials to authorize calls made
by the StackDriver SDK.</p><p><a href=https://developers.google.com/identity/protocols/application-default-credentials>See Google&rsquo;s documentation</a>.</p></td><td>Yes</td></tr><tr id=Params-api_key class=oneof><td><code>apiKey</code></td><td><code>string (oneof)