code: public Iterable<ClassificationModel> getClassifications(FileModel model)
      {
          GraphTraversal<Vertex, Vertex> pipeline = new GraphTraversalSource(getGraphContext().getGraph()).V(model.getElement());
          pipeline.in(ClassificationModel.FILE_MODEL);
          pipeline.has(WindupVertexFrame.TYPE_PROP, Text.textContains(ClassificationModel.TYPE));
          return new FramedVertexIterable<>(getGraphContext().getFramed(), pipeline.toList(), ClassificationModel.class);
      }
docs: Return all {@link ClassificationModel} instances that are attached to the given {@link FileModel} instance.