{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"BindingMode::Ref(Mutability::Mut)"}]}
                    BindingMode::Ref(Mutability::Mut) => BindingMode::Ref(mutability),
                    BindingMode::Ref(Mutability::Not) => BindingMode::Ref(Mutability::Not),
                }