@java.lang.Override
        public long getAttachmentIdNum() {
            return instance.getAttachmentIdNum();
        }
<pre>
Query filter
</pre>

<code>optional int64 attachment_id_num = 1;</code>

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