code: public void addFalsePositive(Key[] keys) {
      if (keys == null) {
        throw new NullPointerException("Key[] can not be null");
      }
  
      for (int i = 0; i < keys.length; i++) {
        addFalsePositive(keys[i]);
      }
    }
docs: Adds an array of false positive information to <i>this</i> retouched Bloom filter.
  @param keys The array of false positive.