syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // `#![rustc_private]` overrides defaults to make private dependencies usable.
context_before:     pub fn is_user_visible_dep(self, key: CrateNum) -> bool {
context_after:         if self.features().enabled(sym::rustc_private) {