{"ast_node_type":"other","tokens":[{"end":132,"kind":"keyword","start":0,"text":"OptionNone,"}]}
    OptionNone,              sym::None,                option_none_variant,        Target::Variant,        GenericRequirement::None;
    OptionSome,              sym::Some,                option_some_variant,        Target::Variant,        GenericRequirement::None;