syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// It is calculated in rustc_mir_transform::coroutine::StateTransform.
context_before:     /// This returns the types of the MIR locals which had to be stored across suspension points.
context_after:     /// All the types here must be in the tuple in CoroutineInterior.