is the primary base type for the Activity Streams vocabulary.
      </p>

      <p>
        In addition to having a global identifier (expressed as an
        absolute IRI using the <code>id</code> property) and an
        "object type" (expressed using the <code>type</code>
        property), all instances of the <code>Object</code> type share a
        common set of properties normatively defined by the
        <a href="https://www.w3.org/TR/activitystreams-vocabulary/">Activity Vocabulary</a>.
        Th