private void setExpirationDate(long value) {
        bitField0_ |= 0x00000020;
        expirationDate_ = value;
    }
<code>optional int64 expiration_date = 6;</code>

@param value The expirationDate to set.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/user/UserFriendRequest.java