QPrinter::setDocName and QPrinter::docName use two different locations

The src/printsupport/kernel/qprinter.cpp code has:

QString QPrinter::docName() const
{
Q_D(const QPrinter);
return d->printEngine->property(QPrintEngine::PPK_DocumentName).toString();
}

and

void QPrinter::setDocName(const QString &name)
{
Q_D(QPrinter);
ABORT_IF_ACTIVE("QPrinter::setDocName");
d->setProperty(QPrintEngine::PPK_DocumentName, name);
}

So the docName gets set and retrieved from two separate property bags.