syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if !file_contains(&new_file_and_idx.0, span_data.hi) {
context_before:             let new_file_and_idx = self.file_for_position(span_data.lo)?;
context_after:                 return None;