syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"Self::RETURNED"}]}
source_snippet:             Self::RETURNED => Cow::from(Self::RETURNED_NAME),
context_before:             Self::UNRESUMED => Cow::from(Self::UNRESUMED_NAME),
context_after:             Self::POISONED => Cow::from(Self::POISONED_NAME),