{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"//"}]}
                // Check if the parent expression is a call to Pin::new. If it
            ty::Adt(def, _) if def.is_box() && self.may_coerce(box_found, expected) => {
                // is and we were expecting a Box, ergo Pin<Box<expected>>, we