syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"Interned(span)"}]}
source_snippet:             Interned(span) => Err(span.index as usize),
context_before:             PartiallyInterned(span) => Ok(SyntaxContext::from_u16(span.ctxt)),
context_after:         }