#vulnerable code 
                              @Test
  public void testView() throws IOException {
    DosFileAttributeView view =
        service.getFileAttributeView(fileSupplier(), DosFileAttributeView.class);
    assertNotNull(view);

    ASSERT.that(view.name()).is("dos");

    DosFileAttributes attrs = view.readAttributes();
    ASSERT.that(attrs.isHidden()).isFalse();
    ASSERT.that(attrs.isArchive()).isFalse();
    ASSERT.that(attrs.isReadOnly()).isFalse();
    ASSERT.that(attrs.isSystem()).isFalse();

    view.setArchive(true);
    view.setReadOnly(true);
    view.setHidden(true);
    view.setSystem(false);

    ASSERT.that(attrs.isHidden()).isFalse();
    ASSERT.that(attrs.isArchive()).isFalse();
    ASSERT.that(attrs.isReadOnly()).isFalse();

    attrs = view.readAttributes();
    ASSERT.that(attrs.isHidden()).isTrue();
    ASSERT.that(attrs.isArchive()).isTrue();
    ASSERT.that(attrs.isReadOnly()).isTrue();
    ASSERT.that(attrs.isSystem()).isFalse();

    view.setTimes(FileTime.fromMillis(0L), null, null);
    ASSERT.that(view.readAttributes().lastModifiedTime())
        .is(FileTime.fromMillis(0L));
  } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                              @Test
  public void testView() throws IOException {
    DosFileAttributeView view = provider.getView(attributeStoreSupplier());
    assertNotNull(view);

    ASSERT.that(view.name()).is("dos");

    DosFileAttributes attrs = view.readAttributes();
    ASSERT.that(attrs.isHidden()).isFalse();
    ASSERT.that(attrs.isArchive()).isFalse();
    ASSERT.that(attrs.isReadOnly()).isFalse();
    ASSERT.that(attrs.isSystem()).isFalse();

    view.setArchive(true);
    view.setReadOnly(true);
    view.setHidden(true);
    view.setSystem(false);

    ASSERT.that(attrs.isHidden()).isFalse();
    ASSERT.that(attrs.isArchive()).isFalse();
    ASSERT.that(attrs.isReadOnly()).isFalse();

    attrs = view.readAttributes();
    ASSERT.that(attrs.isHidden()).isTrue();
    ASSERT.that(attrs.isArchive()).isTrue();
    ASSERT.that(attrs.isReadOnly()).isTrue();
    ASSERT.that(attrs.isSystem()).isFalse();

    view.setTimes(FileTime.fromMillis(0L), null, null);
    ASSERT.that(view.readAttributes().lastModifiedTime())
        .is(FileTime.fromMillis(0L));
  }