QFlags is not accessible through the QObject.property() method (QVariant)

from PySide6.QtWidgets import QApplication, QLabel

app = QApplication()

label = QLabel("Foo")
print(label.text())
print(label.alignment())

print(label.property("text"))
print(label.property("alignment"))

Foo
<PySide6.QtCore.Qt.Alignment object at 0x7f37364cb6f0>
Foo
Traceback (most recent call last):
  File "/home/qt/main.py", line 10, in <module>
    print(label.property("alignment"))
RuntimeError: Can't find converter for 'QFlags<Qt::AlignmentFlag>'.