syntax_data: {"ast_node_type":"other","tokens":[{"end":10,"kind":"keyword","start":0,"text":"};"}]}
source_snippet:         };
context_before:             Mutability::Mut => (LangItem::DerefMut, sym::deref_mut),
context_after:         let borrow_kind = super::util::ref_pat_borrow_kind(mutability);