What is the PySide2 way of emitting a signal with a named parameter to QML

Question

In PyQt5 you would do:

from PyQt5.QtCore import pyqtSignal

sumResult = pyqtSignal(int, arguments=['sum'])
sumResult.emit(42)

And then in QML:

onSumResult: console.log(sum)

Just using the PySide2 signal does not work:

from PySide2.QtCore import Signal

sumResult = Signal(int, arguments=['sum'])
sumResult.emit(42)

Error:

TypeError: 'arguments' is an invalid keyword argument for this function