syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":".collect::<Vec<_>>();"}]}
source_snippet:                 .collect::<Vec<_>>();
context_before:                 .map(|(elem_ty, elem_valtree)| ty::Const::new_value(tcx, *elem_valtree, elem_ty))