syntax_data: {"ast_node_type":"other","tokens":[{"end":112,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // Drops in unwind path (cleanup blocks) are not expanded to async drops, only sync drops in unwind path
context_before:     for bb in START_BLOCK..body.basic_blocks.next_index() {
context_after:         if body[bb].is_cleanup {