syntax_data: {"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"ty::UpvarCapture::ByRef(..)"}]}
source_snippet:                 ty::UpvarCapture::ByRef(..) => Symbol::intern(&format!("_ref__{name}")),
context_before:                 ty::UpvarCapture::ByValue | ty::UpvarCapture::ByUse => name,
context_after:             }