code: function mapSimpleMaintainable(e) {
    var result = mapMaintainableArtefact(e);
  
    if (e.localName === 'Dataflow') {
      result.structure = mapReference(_getFirstChildNS(e, 'Structure'), 'structure', 'datastructure');
    }
  
    if (e.localName === 'Categorisation') {
      result.source = mapReference(_getFirstChildNS(e, 'Source'), 'source', 'dataflow');
      result.target = mapReference(_getFirstChildNS(e, 'Target'), 'target', 'category');
    }
  
    return result;
  }
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