# Converts `self` to a `CString` and returns the required length (without the termination character) of said `CString`
	fun to_cstring(dest: CString, dest_length: Int, source_length: Int): Int `{
		UErrorCode error = U_ZERO_ERROR;
		int32_t res;
		u_strToUTF8(dest, dest_length, &res, self, source_length, &error);
		return res;
	`}