syntax_data: {"ast_node_type":"function","tokens":[{"end":80,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn find_const_ty_from_env<'tcx>(self, env: ParamEnv<'tcx>) -> Ty<'tcx> {
context_before:     #[instrument(level = "debug")]
context_after:         let mut candidates = env.caller_bounds().iter().filter_map(|clause| {