syntax_data: {"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"matches!(tcx.fn_arg_idents(owner_id.def_id),"}]}
source_snippet:     matches!(tcx.fn_arg_idents(owner_id.def_id), [Some(Ident { name: kw::SelfLower, .. }), ..])
context_before: fn fn_has_self_parameter(tcx: TyCtxt<'_>, owner_id: hir::OwnerId) -> bool {
context_after: }