@Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        ResultRequest that = (ResultRequest) o;
        return Objects.equals(componentId, that.componentId) &&
               Objects.equals(mappings, that.mappings) &&
               Objects.equals(requestedRange, that.requestedRange) &&
               Objects.equals(timeFilter, that.timeFilter) &&
               Objects.equals(openGroups, that.openGroups) &&
               resultStyle == that.resultStyle &&
               fetch == that.fetch;
    }
The fetch type determines if the request actually wants data returned or if it only wants data if the data has
changed since the last request was made.

@return The fetch type.
stroom-query/stroom-query-api/src/main/java/stroom/query/api/ResultRequest.java