{"ast_node_type":"function","tokens":[{"end":53,"kind":"keyword","start":0,"text":"fn"}]}
    fn with_cx(scx: &'a GenericCx<'ll, CX>) -> Self {
impl<'a, 'll, CX: Borrow<SCx<'ll>>> GenericBuilder<'a, 'll, CX> {
        // Create a fresh builder from the simple context.