erOperationTemplate[]</a></code></td><td><p>Optional. Templatized operations on the response headers using values produced by the
rule actions. Require the check action result to be OK.</p></td></tr></tbody></table></section><h2 id=Rule-HeaderOperationTemplate>Rule.HeaderOperationTemplate</h2><section><p>A template for an HTTP header manipulation. Values in the template are expressions
that may reference action outputs by name. For example, if an action <code>x</code> produces an output
with a field <code>f