Adapt code to ensure compatibility with latest changes to `Filter.prototype.subscriptions`
Background
As mentioned in trac#6876, the Core team has changed the implementation of Filter.prototype.subscriptions
to use Set
. That means that we need to change our code accordingly to ensure it remains compatible with the extension.
What to change
- Check and, where necessary, adapt any code that interacts with
Filter.prototype.subscriptions
. - Adapt mock layer accordingly.
Edited by Thomas Greiner