{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"///"}]}
/// `SortedIndexMultiMap` assigns a typed index to each item while preserving insertion order.
/// This data structure is a hybrid of an [`IndexVec`] and a [`SortedMap`]. Like `IndexVec`,
/// Like `SortedMap`, `SortedIndexMultiMap` has efficient lookup of items by key. However, this