relation value. If no <code>rel</code> property is
        specified, the link relation is considered to be unspecified. Any given
        Link can have multiple link relation values. In the JSON
        serialization, a single link relation is expressed as a single JSON
        string. Multiple link relations are expressed as an array of JSON
        strings.
      </p>

      <p>
        The scope of the link relation is the object in which the <a>Link</a>
        is an immediate child.
      </p>

      