erf.html/blob/master/docs-developer/gecko-profile-format.md">Gecko profile format</a>,
      this representation is designed to be easily and efficiently serializable.
      </p>
      <section data-dfn-for="ProfilerSample" data-link-for="ProfilerSample">
        <h2>The <dfn>ProfilerSample</dfn> Dictionary</h2>
        <pre class="idl">
        dictionary ProfilerSample {
          required DOMHighResTimeStamp timestamp;
          unsigned long long stackId;
        };
        </pre>
        <p><dfn>timest