@java.lang.Override
        public boolean hasCreationDateStart() {
            return instance.hasCreationDateStart();
        }
<code>optional int64 creation_date_start = 3;</code>

@return Whether the creationDateStart field is set.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/request/storage/QueryMessageAttachmentInfosRequest.java