toKValues method
转换为用字符串key读取字段值的Map
Implementation
@override
Map<String, dynamic> toKValues() {
return {
'_id': _id,
'_bsid': _bsid,
'_time': _time,
'_extra': _extra,
'_trans': _trans,
'uid': uid,
'type': type,
'path': path,
'size': size,
'removed': removed,
};
}