{"ast_node_type":"function","tokens":[{"end":67,"kind":"keyword","start":0,"text":"fn"}]}
    fn fn_ctr_wrapped(&self, ) -> Option<Self> { unimplemented!() }
    fn fn_another(&self, n: u32) -> Bar { unimplemented!() }
    fn fn_ctr_wrapped_2(&self, ) -> Result<Self, Bar> { unimplemented!() }