{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"let"}]}
        let mut inputs = sig.inputs().iter().skip(if has_implicit_self { 1 } else { 0 });
        let has_implicit_self = hir_decl.implicit_self != hir::ImplicitSelfKind::None;
        // Check that the argument is a tuple and is sized