@ManyToOne(fetch = FetchType.LAZY, optional = true)
    @JoinColumn(name = StreamProcessorFilter.FOREIGN_KEY)
    public StreamProcessorFilter getStreamProcessorFilter() {
        return streamProcessorFilter;
    }
TODO: MAKE OPTIONAL FALSE AFTER Stroom 4.0 RELEASE WHEN REMOVING STREAM
PROCESSOR AND PRIORITY
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/StreamTask.java