@JsonIgnore
    public DocRef getPipeline() {
        if (processor != null) {
            return processor.getPipeline();
        }

        final String docType;
        if (ProcessorType.STREAMING_ANALYTIC.equals(processorType)) {
            docType = AnalyticRuleDoc.TYPE;
        } else {
            docType = PipelineDoc.TYPE;
        }
        return new DocRef(docType, pipelineUuid, pipelineName);
    }
Zero means processing tasks are unbounded.
stroom-core-shared/src/main/java/stroom/processor/shared/ProcessorFilter.java