{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"closure_dependencies:"}]}
    closure_dependencies: FxHashMap<ClosureId, Vec<ClosureId>>,
    /// comment on `InferenceContext::sort_closures`
    deferred_closures: FxHashMap<ClosureId, Vec<(Ty, Ty, Vec<Ty>, ExprId)>>,