syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // that is that a `yield` will return from the function, and `resume_arg` is written
context_before:             // Note that we do *not* gen the `resume_arg` of `Yield` terminators. The reason for
context_after:             // only when the coroutine is later resumed. Unlike `Call`, this doesn't require the