Is

MapProperty#insert

no longer available? I see it was announced in 8.7 but I can't see it in 8.9. https://docs.gradle.org/8.7/release-notes.html#better-api-for-updating-collection-properties The release notes are very confusing and misleading. If it's not available, then what's the alternative?

Those methods have been tentatively added twice and then removed in a subsequent version due to various issues (you can probably find the details in the GitHub issues and/or PRs) For now, there's no alternative for adding to a MapProperty while keeping the existing convention, all you can do is use put() which will shadow the convention (if any).

thanks! I'm not sure what you mean by 'shadow the convention' though...