public Builder fetch(final Fetch value) {
            this.fetch = value;
            return this;
        }
@param value The fetch mode for the query.
             NONE means fetch no data,
             ALL means fetch all known results,
             CHANGES means fetch only those records not see in previous requests

@return The {@link Builder}, enabling method chaining
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/ResultRequest.java