otected and only settable once.</p><div class="fullcomment"><div class="comment cmt"><p>Sets this feature to be protected and only settable once.
</p></div><dl class="paramcmts block"><dt>returns</dt><dd class="cmt"><p>
  This Feature</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="Feature.html" class="extype" name="com.johnsnowlabs.nlp.serialization.Feature">Feature</a></dd></dl></div>
    </li><li name="com.johnsnowlabs.nlp.serialization.Feature#setValue" visbl="pub" cla