{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"map:"}]}
    map: &'a mut SnapshotMapStorage<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>,
pub struct ProjectionCache<'a, 'tcx> {
    undo_log: &'a mut InferCtxtUndoLogs<'tcx>,