syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"start_col"}]}
source_snippet:             start_col = CharPos::from_usize(0);
context_before:             lines.push(LineInfo { line_index, start_col, end_col: CharPos::from_usize(line_len) });
context_after:         }