eaders and body).
Should usually be set to <code>request.total_size</code>.</p><p>Optional.</p></td><td>No</td></tr><tr id=Template-response_size><td><code>responseSize</code></td><td><code>int64</code></td><td><p>Response body size. Should usually be set to <code>response.size</code>.</p><p>Optional.</p></td><td>No</td></tr><tr id=Template-response_total_size><td><code>responseTotalSize</code></td><td><code>int64</code></td><td><p>Response total size (headers and body).
Should usually be set to <code>respo