NIMMessageKey.fromMap constructor Null safety

NIMMessageKey.fromMap(
  1. Map<String, dynamic> param
)

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?,
  );
}