The new (.NET 8.0) Experimental Attribute is used to mark features that are more likely to change in the future. They are usually production-ready, but changes in future releases will not be considered breaking changes.
⚠️ In .NET 6 & 7, theExperimentalAttributeis not available and we polyfill it but there is no compiler warning / error that will guide you!
ℹ️ Multi-key string indices
The multi-key string indices API is considered to be experimental because the API is allocation-heavy and might change to a Span-based API in the future.
However, the feature itself is production-ready, supported and is here to stay.