syntax_data: {"ast_node_type":"function","tokens":[{"end":66,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet: fn param_env(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ParamEnv<'_> {
context_before: /// See `ParamEnv` struct definition for details.
context_after:     // Compute the bounds on Self and the type parameters.