When this option is set to `true` the results for
`textDocument/semanticTokens` include semantic tokens for syntactic
highlighting obtained from swift-syntax. If this option is set to
`false` only the semantic tokens obtained from SourceKit are included.
This option defaults to `false`.
Replace usages of `Optional.map` and `Optional.flatMap` by if expressions or other expressions.
I personally find `Optional.map` to be hard to read because `map` implies mapping a collection to me. Usually the alternative constructs seem clearer to me.