messageDirection property Null safety
@JsonKey(unknownEnumValue: NIMMessageDirection.outgoing), read / write
发送消息或者接收到消息
Implementation
@JsonKey(unknownEnumValue: NIMMessageDirection.outgoing)
NIMMessageDirection messageDirection;
发送消息或者接收到消息
@JsonKey(unknownEnumValue: NIMMessageDirection.outgoing)
NIMMessageDirection messageDirection;