@Override
    public boolean equals(final Object obj) {
        if (obj == null || !(obj instanceof PipelineElementType)) {
            return false;
        }

        final PipelineElementType elementType = (PipelineElementType) obj;
        return type.equals(elementType.type);
    }
Add this type to elements that we want to appear in the pipeline tree in
stepping mode.
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/PipelineElementType.java