toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (documentChange != null) 'documentChange': documentChange!,
if (documentDelete != null) 'documentDelete': documentDelete!,
if (documentRemove != null) 'documentRemove': documentRemove!,
if (filter != null) 'filter': filter!,
if (targetChange != null) 'targetChange': targetChange!,
};