jbpm/jbpm-flow/src/main/java/org/jbpm/workflow/instance/node/CompositeNodeInstance.java [231:246]:
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    public Collection<KogitoNodeInstance> getKogitoNodeInstances(Predicate<KogitoNodeInstance> filter,
            boolean recursive) {
        Collection<KogitoNodeInstance> result = new ArrayList<>();
        for (NodeInstance nodeInstance : nodeInstances) {

            if (nodeInstance instanceof KogitoNodeInstance && filter.test(nodeInstance)) {
                result.add(nodeInstance);

            }
            if (nodeInstance instanceof KogitoNodeInstanceContainer && recursive) {
                result.addAll(((KogitoNodeInstanceContainer) nodeInstance).getKogitoNodeInstances(
                        filter, true));
            }
        }
        return result;
    }
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jbpm/jbpm-flow/src/main/java/org/jbpm/workflow/instance/impl/WorkflowProcessInstanceImpl.java [234:247]:
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    public Collection<KogitoNodeInstance> getKogitoNodeInstances(Predicate<KogitoNodeInstance> filter,
            boolean recursive) {
        Collection<KogitoNodeInstance> result = new ArrayList<>();
        for (NodeInstance nodeInstance : nodeInstances) {
            if (nodeInstance instanceof KogitoNodeInstance && filter.test(nodeInstance)) {
                result.add(nodeInstance);
            }
            if (nodeInstance instanceof KogitoNodeInstanceContainer && recursive) {
                result.addAll(((KogitoNodeInstanceContainer) nodeInstance).getKogitoNodeInstances(
                        filter, true));
            }
        }
        return result;
    }
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