{"ast_node_type":"variable","tokens":[{"end":78,"kind":"keyword","start":0,"text":"let"}]}
                let arg4 = builder.context.new_rvalue_from_int(arg4_type, -1);
                let c = builder.context.new_rvalue_from_vector(None, arg3_type, &[new_args[2]; 8]);
                args = vec![a, b, c, arg4, new_args[3]].into();