toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (criteria != null) 'criteria': criteria!,
if (filterSpecs != null) 'filterSpecs': filterSpecs!,
if (filterViewId != null) 'filterViewId': filterViewId!,
if (namedRangeId != null) 'namedRangeId': namedRangeId!,
if (range != null) 'range': range!,
if (sortSpecs != null) 'sortSpecs': sortSpecs!,
if (title != null) 'title': title!,
};