private void ensureFromIdsIsMutable() {
            if (!fromIds_.isModifiable()) {
                fromIds_ = makeMutableCopy(fromIds_);
            }
            bitField0_ |= 0x00000008;
        }
<code>optional bool are_system_messages = 3;</code>

@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/message/QueryMessagesRequest.java