if (posixFileAttributeView != null) {
                responseData.addMetaData(FILE_ATTRIBUTE_VIEW, posixFileAttributeView);
                responseData.addMetaData(FS_FILE_GROUPS, new String[] { posixFileAttributeView.readAttributes().group().getName() });
                return posixFileAttributeView;
            }
            return ownerAttrView;
        } catch (final Exception e) {

    }

    private BasicFileAttributes readAttributes() throws IOException {
      return Files.readAttributes(
          path,
          BasicFileAttributes.class,
          followLinks ? FOLLOW_LINKS : new LinkOption[] {NOFOLLOW_LINKS});
    }

    @Override
    public Optional<Long> sizeIfKnown() {
      BasicFileAttributes attrs;
      try {
        attrs = readAttributes();
      } catch (IOException e) {

    }

    private BasicFileAttributes readAttributes() throws IOException {
      return Files.readAttributes(
          path,
          BasicFileAttributes.class,
          followLinks ? FOLLOW_LINKS : new LinkOption[] {NOFOLLOW_LINKS});
    }

    @Override
    public Optional<Long> sizeIfKnown() {
      BasicFileAttributes attrs;
      try {
        attrs = readAttributes();
      } catch (IOException e) {

      if (!isAndroid() && !isWindows()) {
        PosixFileAttributes attributes =
            java.nio.file.Files.getFileAttributeView(file.toPath(), PosixFileAttributeView.class)
                .readAttributes();
        assertThat(attributes.permissions()).containsExactly(OWNER_READ, OWNER_WRITE);
      }
    }
    out.close();

    // Check that source returns the right data

                    });
                } else if (fileAttributeView instanceof final PosixFileAttributeView posixFileAttributeView) {
                    final PosixFileAttributes attributes = posixFileAttributeView.readAttributes();
                    final UserPrincipal userPrincipal = attributes.owner();
                    if (logger.isDebugEnabled()) {