Examples of edu.stanford.nlp.ling.CoreLabel.containsKey()

        for (int i = 0; i < doc.get(CoreAnnotations.TokensAnnotation.class).size(); ++i) {
          CoreLabel tokA = doc.get(CoreAnnotations.TokensAnnotation.class).get(i);
          CoreLabel tokB = readDoc.get(CoreAnnotations.TokensAnnotation.class).get(i);
          if (!tokA.equals(tokB)) {
            for (Class keyA : tokA.keySet()) {
              if (!tokB.containsKey(keyA)) {
                assertTrue("Read document doesn't have key: " + keyA, false);
              } else if (tokA.get(keyA) != null && !tokA.get(keyA).equals(tokB.get(keyA))) {
                assertTrue("Documents disagree on key: " + keyA, false);
              }
            }

      } while (nextToken != null && nextToken.word().length() == 0);


      // Check for compounds to split
      if (splitCompounds && nextToken instanceof CoreLabel) {
        CoreLabel cl = (CoreLabel) nextToken;
        if (cl.containsKey(ParentAnnotation.class) && cl.get(ParentAnnotation.class).equals(FrenchLexer.COMPOUND_ANNOTATION)) {
          nextToken = (T) processCompound(cl);
        }
      }


      return nextToken;

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