syntax_data: {"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"Err(SpanSnippetError::SourceNotAvailable"}]}
source_snippet:                 Err(SpanSnippetError::SourceNotAvailable { filename: local_begin.sf.name.clone() })
context_before:             } else {
context_after:             }