syntax_data: {"ast_node_type":"other","tokens":[{"end":3,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //!
context_before: //! Candidate selection. See the [rustc dev guide] for more information on how this works.
context_after: //! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/traits/resolution.html#selection