* @param rel relationship to the picture data in the ooxml package
*/
static CTPicture prototype(int shapeId, String rel) {
CTPicture ct = CTPicture.Factory.newInstance();
CTPictureNonVisual nvSpPr = ct.addNewNvPicPr();
CTNonVisualDrawingProps cnv = nvSpPr.addNewCNvPr();
cnv.setName("Picture " + shapeId);
cnv.setId(shapeId + 1);
nvSpPr.addNewCNvPicPr().addNewPicLocks().setNoChangeAspect(true);
nvSpPr.addNewNvPr();
CTBlipFillProperties blipFill = ct.addNewBlipFill();
CTBlip blip = blipFill.addNewBlip();