/developers.google.com/protocol-buffers/docs/reference/google.protobuf#duration>Duration</a></code></td><td><p>Optional. Allows configuration of the time between calls out to for TCP
metrics reporting. The default duration is <code>15s</code>.</p></td><td>No</td></tr><tr id=PluginConfig-metrics><td><code>metrics</code></td><td><code><a href=#MetricConfig>MetricConfig[]</a></code></td><td><p>Metric overrides.</p></td><td>No</td></tr><tr id=PluginConfig-definitions><td><code>definitions</code></td><td><code><