Maybe, you need to use the language version preview to enable all features.
You can check these packages on Release.
There are a lot of packages here.
| Package | Description |
|---|---|
| PureConst | Make Pure Attribute works and add the Const Attribute |
| Fluent | Make your API as a Fluent API |
| Assertions | Fluent Assertions with three states |
| InterpolatedParser | Parse the data from string in a curse way |
| Roslyn Helper | To help you with roslyn coding |
