# Converts a `CString` to a `UCharString` and returns the required length of said `UCharString`
	fun from_cstring(dest_length: Int, source: CString, source_length: Int): Int `{
		UErrorCode error = U_ZERO_ERROR;
		int32_t res;
		u_strFromUTF8(self, dest_length, &res, source, source_length, &error);
		return res;
	`}