syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"self.ensure_ok().coherent_trait(async_drop_trait).ok()?;"}]}
source_snippet:         self.ensure_ok().coherent_trait(async_drop_trait).ok()?;
context_before:         let async_drop_trait = self.lang_items().async_drop_trait()?;