code: public SourceReportModel getSourceReportForFileModel(FileModel fileModel)
      {
          GraphTraversal<Vertex, Vertex> pipeline = new GraphTraversalSource(getGraphContext().getGraph()).V(fileModel.getElement());
          pipeline.in(SourceReportModel.SOURCE_REPORT_TO_SOURCE_FILE_MODEL);
  
          SourceReportModel result = null;
          if (pipeline.hasNext())
          {
              result = frame(pipeline.next());
          }
          return result;
      }
docs: Find the SourceReportModel instance for this fileModel (this is a 1:1 relationship).