syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:             | ["core" | "std", "task", "LocalWaker" | "Waker"]
context_before:             ["syn" | "proc_macro2", ..]
context_after:             | ["core" | "std", "task", "wake", "LocalWaker" | "Waker"] => Some(smallvec![]),