code: @Override
      public Set<String> supportedFileAttributeViews() {
  
          this.checkClosed();
  
          final Set<String> names = new HashSet<>(1);
          // Required by spec
          names.add(FILE_ATTR_VIEW_BASIC);
          return Collections.unmodifiableSet(names);
      }
docs: {@inheritDoc}
  
  @see java.nio.file.FileSystem#supportedFileAttributeViews()