etadata can have their own set of “metadata”, with the same format as the metadata for an action, for pieces of metadata that referenced them explicitly. For example, capturing GPS coordinates would reference the entire action, but computing bounding boxes in an image would reference that particular image only.</p>
<div class="highlight-javascript notranslate"><div class="highlight"><pre><span></span><span class="p">{</span><span class="w"> </span><span class="c1">// beginning of an action in the &quot;