code: function get(model, query) {
    if (
      model.histogram2d &&
      model.histogram2d[query.axes[0]] &&
      model.histogram2d[query.axes[0]][query.axes[1]]
    ) {
      if (query.score) {
        return model.histogram2d[query.axes[0]][query.axes[1]].filter(
          (hist) => query.score.indexOf(hist.role.score) !== -1
        );
      }
      return model.histogram2d[query.axes[0]][query.axes[1]];
    }
    return null;
  }
docs: ----------------------------------------------------------------------------