syntax_data: {"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> Option<ty::AsyncDestructor> {
context_before:         validate: impl Fn(Self, LocalDefId) -> Result<(), ErrorGuaranteed>,
context_after:         let async_drop_trait = self.lang_items().async_drop_trait()?;