fileSize property Null safety
The size (KB) of a log file. The default value is 1024 KB.
If you set
fileSize to 1024 KB, the SDK outputs at most 5 MB log files; if you set it to less than 1024 KB, the setting is invalid, and the maximum size of a log file is still 1024 KB.
@JsonKey(includeIfNull: false) int? fileSize;