@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        DocumentOperationParameters that = (DocumentOperationParameters) o;
        return traceLevel == that.traceLevel &&
               priority == that.priority &&
               Objects.equals(fieldSet, that.fieldSet) &&
               Objects.equals(route, that.route);
    }
Sets the {@link ResponseHandler} to handle the {@link Response} of an async operation, instead of the session default.
documentapi/src/main/java/com/yahoo/documentapi/DocumentOperationParameters.java