public PdfFormField AddSingleLinePasswordField(string name, string text, BaseFont font, float fontSize, float llx, float lly, float urx, float ury)
{
PdfFormField field = PdfFormField.CreateTextField(writer, PdfFormField.SINGLELINE, PdfFormField.PASSWORD, 0);
SetTextFieldParams(field, text, name, llx, lly, urx, ury);
DrawSingleLineOfText(field, text, font, fontSize, llx, lly, urx, ury);
AddFormField(field);
return field;
}