public Builder addFields(final Field... fields) {
            structure.addAll(Arrays.asList(fields));
            return this;
        }
Add headings to our data

@param fields the fields which act as headings for our data
@return The {@link Builder}, enabling method chaining
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/FlatResult.java