FileAuditEndpoint(Builder builder) throws IOException {
        this.dateFormatSupplier = builder.dateFormatSupplier;
        this.syncOnAccept = builder.syncOnAccept;

        FileOutputStream fos = new FileOutputStream(builder.location.toFile(), true);
        this.fileDescriptor = fos.getFD();
        this.outputStream = new BufferedOutputStream(fos);
    }