syntax_data: {"ast_node_type":"function","tokens":[{"end":60,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn new_task_context(tcx: TyCtxt<'tcx>) -> Ty<'tcx> {
context_before:     /// Creates a `&mut Context<'_>` [`Ty`] with erased lifetimes.
context_after:         let context_did = tcx.require_lang_item(LangItem::Context, DUMMY_SP);