toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (dimensions != null) 'dimensions': dimensions!,
if (filter != null) 'filter': filter!,
if (measureMask != null) 'measureMask': measureMask!,
if (timeGranularity != null) 'timeGranularity': timeGranularity!,
};