syntax_data: {"ast_node_type":"import","tokens":[{"end":68,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // because `drops[n]` should unwind to `drops[n-1]`.
context_before:                 // We adjust this BEFORE we create the drop (e.g., `drops[n]`)
context_after:                 debug_assert_eq!(unwind_drops.drop_nodes[unwind_to].data.local, drop_data.local);