syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Edges into the `DropTree` that need to be added once it's lowered.
context_before:     existing_drops_map: FxHashMap<DropNodeKey, DropIdx>,
context_after:     entry_points: Vec<(DropIdx, BasicBlock)>,