toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (columnIndices != null) 'columnIndices': columnIndices!,
if (fields != null) 'fields': fields!,
if (tableColumnProperties != null)
'tableColumnProperties': tableColumnProperties!,
if (tableStartLocation != null)
'tableStartLocation': tableStartLocation!,
};