{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"///"}]}
/// `cleanup` basic blocks have a couple restrictions:
/// The basic block pointed to by a `Cleanup` unwind action must have its `cleanup` flag set.
///  1. All `unwind` fields in them must be `UnwindAction::Terminate` or `UnwindAction::Unreachable`.