code: public Collection<FieldWithHighlightParameters> getFieldsWithHighlightParameters() {
  
  		List<FieldWithHighlightParameters> result = new ArrayList<>();
  		for (Field candidate : fields) {
  
  			if (candidate instanceof FieldWithHighlightParameters) {
  				result.add((FieldWithHighlightParameters) candidate);
  			}
  		}
  
  		return result;
  	}
docs: Get Collection of fields that have field specific highlight options.
  
  @return