code: public static Configuration forCurrentPlatform() {
      String os = System.getProperty("os.name");
  
      if (os.contains("Windows")) {
        return windows();
      } else if (os.contains("OS X")) {
        return osX();
      } else {
        return unix();
      }
    }
docs: Returns a default configuration appropriate to the current operating system.
  
  <p>More specifically, if the operating system is Windows, {@link Configuration#windows()} is
  returned; if the operating system is Mac OS X, {@link Configuration#osX()} is returned;
  otherwise, {@link Configuration#unix()} is returned.
  
  <p>This is the configuration used by the {@code Jimfs.newFileSystem} methods that do not take a
  {@code Configuration} parameter.
  
  @since 1.1