@java.lang.Override
    public com.google.protobuf.ByteString getAttachmentIdStrBytes() {
        return com.google.protobuf.ByteString.copyFromUtf8(attachmentIdStr_);
    }
<code>optional string attachment_id_str = 2;</code>

@return The bytes for attachmentIdStr.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/request/storage/UpdateMessageAttachmentInfoRequest.java