cified or given a value 0 explicitely, a default batch size of 1000 will be used.</p></td></tr><tr id="Params.papertrail_url"><td><code>papertrailUrl</code></td><td><code>string</code></td><td><p>Papertrail url to ship logs to. If no papertrail url is given then the logs will NOT be shipped but rather dropped.</p></td></tr><tr id="Params.papertrail_local_retention_duration"><td><code>papertrailLocalRetentionDuration</code></td><td><code><a href="https://developers.google.com/protocol-buffers/docs/reference/