toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (kind != null) 'kind': kind!,
if (queryPath != null) 'queryPath': queryPath!,
if (queryValue != null) 'queryValue': queryValue!,
if (selfLink != null) 'selfLink': selfLink!,
if (variableKey != null) 'variableKey': variableKey!,
if (variableValue != null) 'variableValue': variableValue!,
};