{"ast_node_type":"other","tokens":[{"end":1,"kind":"keyword","start":0,"text":"{"}]}
{
) -> impl Iterator<Item = (BasicBlock, &'a BasicBlockData<'tcx>)> + ExactSizeIterator + DoubleEndedIterator
    body.basic_blocks.reverse_postorder().iter().map(|&bb| (bb, &body.basic_blocks[bb]))