touchFile.delete();

        assertTrue(updateCheckManager.isUpdateRequired(a, remoteRepository));

        file.getParentFile().mkdirs();
        file.createNewFile();
        updateCheckManager.touch(a, remoteRepository, null);

        assertFalse(updateCheckManager.isUpdateRequired(a, remoteRepository));

        assertNull(

    boolean isUpdateRequired(Artifact artifact, ArtifactRepository repository);

    void touch(Artifact artifact, ArtifactRepository repository, String error);

    String getError(Artifact artifact, ArtifactRepository repository);

    boolean isUpdateRequired(RepositoryMetadata metadata, ArtifactRepository repository, File file);

    void touch(RepositoryMetadata metadata, ArtifactRepository repository, File file);

                        getLogger().debug("Exception", e);
                    } finally {
                        updateCheckManager.touch(metadata, repository, file);
                    }
                }

                // TODO should this be inside the above check?
                // touch file so that this is not checked again until interval has passed
                if (file.exists()) {

        File touchFile = getTouchfile(artifact);
        return getError(touchFile, getRepositoryKey(repository));
    }

    @Override
    public void touch(Artifact artifact, ArtifactRepository repository, String error) {
        File file = artifact.getFile();

        File touchfile = getTouchfile(artifact);

        if (file.exists()) {

And now, we can use `__init__` to declare the parameters of the instance that we can use to "parameterize" the dependency:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[9] *}

In this case, **FastAPI** won't ever touch or care about `__init__`, we will use it directly in our code.

## Create an instance

We could create an instance of this class with:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[18] *}

    Path temp = createTempFile();
    assertTrue(Files.exists(temp));
    Files.delete(temp);
    assertFalse(Files.exists(temp));

    MoreFiles.touch(temp);
    assertTrue(Files.exists(temp));
    MoreFiles.touch(temp);
    assertTrue(Files.exists(temp));
  }

  public void testTouchTime() throws IOException {
    Path temp = createTempFile();
    assertTrue(Files.exists(temp));

                            policy.getChecksumPolicy(),
                            false);

                    updateCheckManager.touch(artifact, repository, null);
                } catch (ResourceDoesNotExistException e) {
                    updateCheckManager.touch(artifact, repository, null);
                    throw e;
                } catch (TransferFailedException e) {

'[data-ride=\"carousel\"]'\n\nconst Default = {\n  interval: 5000,\n  keyboard: true,\n  slide: false,\n  pause: 'hover',\n  wrap: true,\n  touch: true\n}\n\nconst DefaultType = {\n  interval: '(number|boolean)',\n  keyboard: 'boolean',\n  slide: '(boolean|string)',\n  pause: '(string|boolean)',\n  wrap: 'boolean',\n  touch: 'boolean'\n}\n\nconst PointerType = {\n  TOUCH: 'touch',\n  PEN: 'pen'\n}\n\n/**\n * Class definition\n */\n\nclass Carousel {\n  constructor(element, config) {\n    this._items = null\n...

T="carousel",w="bs.carousel",C=o.default.fn[T],S="active",N="next",D="prev",A="slid.bs.carousel",I=".active.carousel-item",k={interval:5e3,keyboard:!0,slide:!1,pause:"hover",wrap:!0,touch:!0},O={interval:"(number|boolean)",keyboard:"boolean",slide:"(boolean|string)",pause:"(string|boolean)",wrap:"boolean",touch:"boolean"},j={TOUCH:"touch",PEN:"pen"},P=function(){function t(t,e){this._items=null,this._interval=null,this._activeElement=null,this._isPaused=!1,this._isSliding=!1,this.touchTimeout=null,this.tou...

   * timestamp of the existing file at the given path to the current system time.
   */
  @SuppressWarnings("GoodTime") // reading system time without TimeSource
  public static void touch(Path path) throws IOException {
    checkNotNull(path);

    try {
      Files.setLastModifiedTime(path, FileTime.fromMillis(System.currentTimeMillis()));
    } catch (NoSuchFileException e) {
      try {