Glow graphical effect has no property "samples"

This sample from Glow graphical effect documentation in Qt 6.2.0 doesn't work.

Qt Creator shows inline error for it:

Invalid property name "samples". (M16)

And the application fails to run, outputting the following error:

Cannot assign to non-existent property "samples"

pointing to this line:

layer.effect: Glow {
    samples: 15 // here's the problem
    radius: 100
    color: "blue"
    transparentBorder: true
}

In Qt 5.15.2 samples was a valid property. So either this is a bug in the Glow implementation in 6.2.0, or it's a documentation issue.