}
float[] rect = ITextUtils.stringToFloatArray(size);
if (rect.length != 4) {
throw new RuntimeException("size must contain four numbers");
}
form.addSignature(field, rect[0], rect[1], rect[2], rect[3]);
UIDocument doc = (UIDocument) findITextParent(this, UIDocument.class);
doc.addSignature(this);
super.encodeEnd(context);