 
 }
 
+// MARK: - CPTPlotDataSource
 extension TrendViewController: CPTPlotDataSource {
 
     /** @brief @required The number of data points for the plot.

    }
}

extension TrendViewController: CPTPlotSpaceDelegate {

    func plotSpace(_ space: CPTPlotSpace,

    }
}

// MARK: - CPTAxisDelegate
extension TrendViewController: CPTAxisDelegate {

    private func axis(_ axis: CPTAxis,
