</code></td><td><p>The API Key to be used for auth. API Key is no longer supported, use service account instead.</p></td><td>Yes</td></tr><tr id=Params-service_account_path class=oneof><td><code>serviceAccountPath</code></td><td><code>string (oneof)</code></td><td><p>The path to a Google service account credential file, relative to
the Mixer. E.g. <code>/etc/opt/mixer/gcp-serviceaccount-creds.json</code>
or <code>./testdata/my-test-account-creds.json</code>.</p></td><td>Yes</td></tr><tr id=Params-metric_inf