Die Definitionen für "my_ba1" und "my_ba2" werden bei
The ac definitions will be found for "my_ba1" and "my_ba2" while writing the attribute value in one line.
access_control = ["my_ba1", "my_ba2"] # (good)
but unfortunately not for multiline values:
access_control = [
"my_ba1",
"my_ba2"
]