@PipelineProperty(
            description = "Should this split filter store processing locations.",
            defaultValue = "true",
            displayPriority = 3)
    public void setStoreLocations(final boolean storeLocations) {
        if (locationHolder != null) {
            locationHolder.setStoreLocations(storeLocations);
        }
    }
Make sure the event array is going to be big enough to hold the item that
is just about to be added.
stroom-pipeline/src/main/java/stroom/pipeline/filter/SplitFilter.java