PdfRpt.VectorCharts.VerticalBarChart.sanityCheck C# (CSharp) Method

        private void sanityCheck()
        {
            if (PdfFont == null)
                throw new NullReferenceException("`PdfFont` is null.");

            if (ContentByte == null)
                throw new NullReferenceException("`ContentByte` is null.");

            if (Items == null)
                throw new NullReferenceException("`Items` is null.");

            if (!Items.Any())
                throw new InvalidOperationException("There is no BarChartItem to draw.");
        }