public virtual void LockedLayer()
{
String outPdf = destinationFolder + "lockedLayer.pdf";
String cmpPdf = sourceFolder + "cmp_lockedLayer.pdf";
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(outPdf));
PdfFont font = PdfFontFactory.CreateFont();
PdfLayer layer1 = new PdfLayer("Layer 1", pdfDoc);
PdfLayer layer2 = new PdfLayer("Layer 2", pdfDoc);
layer2.SetLocked(true);
PdfCanvas canvas = new PdfCanvas(pdfDoc.AddNewPage());
canvas.SetFontAndSize(font, 12);
PdfLayerTestUtils.AddTextInsideLayer(layer1, canvas, "Layer 1 text", 100, 700);
PdfLayerTestUtils.AddTextInsideLayer(layer2, canvas, "Layer 2 text", 100, 650);
pdfDoc.Close();
PdfLayerTestUtils.CompareLayers(outPdf, cmpPdf);
}