ring">String</span></span>, <span name="field">field: <span class="extype" name="scala.Predef.String">String</span></span>)</span><span class="result">: <span class="extype" name="scala.Option">Option</span>[_]</span>
      </span>
      
      <div class="fullcomment"><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.MapFeature#