build method
Implementation
@override
void build(PdfPage page, PdfObject object, PdfDict params) {
super.build(page, object, params);
if (alternateName != null) {
params['/TU'] = PdfSecString.fromString(object, alternateName!);
}
if (mappingName != null) {
params['/TM'] = PdfSecString.fromString(object, mappingName!);
}
params['/Ff'] = PdfNum(fieldFlagsValue);
}