toJson method
Implementation
Map<String, Object?> toJson() => {
if (column != null) 'column': column,
if (context != null) 'context': context,
'expression': expression,
if (format != null) 'format': format,
if (frameId != null) 'frameId': frameId,
if (line != null) 'line': line,
if (source != null) 'source': source,
};