toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
      if (endMinutesAgo != null) 'endMinutesAgo': endMinutesAgo!,
      if (name != null) 'name': name!,
      if (startMinutesAgo != null) 'startMinutesAgo': startMinutesAgo!,
    };