toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (boolValue != null) 'boolValue': boolValue!,
if (comparator != null) 'comparator': comparator!,
if (intValue != null) 'intValue': intValue!,
if (key != null) 'key': key!,
if (stringValue != null) 'stringValue': stringValue!,
};