syntax_data: {"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! or `Poll::Ready(x)` and `Poll::Pending` respectively.
context_before: //! `CoroutineState::Complete(x)` and `CoroutineState::Yielded(y)`,
context_after: //! MIR locals which are live across a suspension point are moved to the coroutine struct