NIMMessageKey.fromMap constructor Null safety
Implementation
factory NIMMessageKey.fromMap(Map<String,dynamic> param){
return NIMMessageKey(
sessionType:NIMSessionTypeConverter().fromValue(param['sessionType'] as String),
fromAccount:param['fromAccount'] as String?,
toAccount:param['toAccount'] as String?,
time:param['time'] as int?,
serverId:param['serverId'] as int?,
uuid:param['uuid'] as String?,
);
}