    <span class="na">validDuration</span><span class="pi">:</span> <span class="s">1s</span>
    <span class="c1"># The first matching override is applied.</span>
    <span class="c1"># A requestcount instance is checked against override dimensions.</span>
    <span class="na">overrides</span><span class="pi">:</span>
    <span class="c1"># The following override applies to traffic from 'rewiews' version v2,</span>
    <span class="c1"># destined for the ratings service. The destinationVersion dimension is 