><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=Params-log_stream><td><code>logStream</code></td><td><code><a href=#Params-Stream>Stream</a></code></td><td><p>Selects which standard stream to write to for log entries.
STDERR is the default Stream.</p></td><td>No</td></tr><tr id=Params-severity_levels><td><code>severityLevels</code></td><td><code>map&lt;string,&nbsp;<a href=#Params-Level>Level</a>></code></td><td><p>Maps from severity strings as specified in Lo