toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (customFeatures != null) 'customFeatures': customFeatures!,
if (sourceNumericFilter != null)
'sourceNumericFilter': sourceNumericFilter!,
if (sourceTextFilter != null) 'sourceTextFilter': sourceTextFilter!,
if (valueTransformation != null)
'valueTransformation': valueTransformation!,
};