syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"b.terminator_mut().successors_mut(|target|"}]}
source_snippet:         b.terminator_mut().successors_mut(|target| *target += 1);
context_before:     for b in body.basic_blocks_mut().iter_mut() {
context_after:     }