How to convert FString into UTF8

To convert an FString into UTF8:

FString Body = TEXT("Text to convert into UTF8");
int32 Utf8Len = FTCHARToUTF8_Convert::ConvertedLength(*Body, Body.Len());
TArray<uint8> Buffer;
Buffer.SetNumUninitialized(Utf8Len);
FTCHARToUTF8_Convert::Convert(reinterpret_cast<UTF8CHAR*>(Buffer.GetData()), Buffer.Num(), *Body, Body.Len());
//Buffer now contains the resulting utf8 string