The existing File object

The existing File object: - Is constructed with a file path (string as an argument). - Has a single method called `Write`, which persists bytes directly to disk. Example: var f = new File("/tmp/my/file.txt"); f.Write(Encoding.UTF8.GetBytes("hello world")); Write a wrapper class for the file object which allows us to buffer the writes in-memory. The wrapper class, `BufferedFile`, is initialized with a `File` object and a buffer size. It has two methods: `Write` and `Flush`. - The data should be flushed to disk when the buffer is full, - or on demand with a method called `Flush`. All bytes must be stored in the buffer first before being written to disk. The buffer cannot use more memory than the max bytes allowed. Example usage: var f = new File("/tmp/my/file.txt"); int bufSize = 1000; var b = new BufferedFile(f, bufSize); b.Write(Encoding.UTF8.GetBytes("hello world")); b.Flush();