CYUTF8String CYPoolUTF8String(CYPool &pool, CYUTF16String utf16);
CYUTF16String CYPoolUTF16String(CYPool &pool, CYUTF8String utf8);
CYUTF8String CYPoolUTF8String(CYPool &pool, CYUTF16String utf16);
CYUTF16String CYPoolUTF16String(CYPool &pool, CYUTF8String utf8);