VersionRange.createFromVersion("1.0"),
                "type",
                null,
                "system",
                "compile");

        // this one should never happen in practice...
        Artifact artifact5 = factory.createDependencyArtifact(
                "test-grp", "test-artifact-5", VersionRange.createFromVersion("1.0"), "type", null, "system", "system");

     * Tricky case: flat directory structure, but child directory != artifactId.
     * Model interpolation does not give same result when calculated from build or from repo...
     * This is why MNG-5000 fix in code is marked as bad practice (uses file names)
     * @throws IOException Model read problem
     */
    @Test
    void testFlatTrickyUrls() throws IOException {
        // parent references child with artifactId (which is not directory name)

      // Expected.
    }
    assertInvariants(map);
  }

  public void testEntrySetSetValue() {
    // TODO: Investigate the extent to which, in practice, maps that support
    // put() also support Entry.setValue().
    if (!supportsPut) {
      return;
    }

    Map<K, V> map;
    V valueToSet;
    try {
      map = makePopulatedMap();

     | mechanisms described above. For inheritance purposes, and to activate profiles via <activatedProfiles/>
     | or the command line, profiles have to have an ID that is unique.
     |
     | An encouraged best practice for profile identification is to use a consistent naming convention
     | for profiles, such as 'env-dev', 'env-test', 'env-production', 'user-jdcasey', 'user-brett', etc.

      // Expected.
    }
    assertInvariants(map);
  }

  public void testEntrySetSetValue() {
    // TODO: Investigate the extent to which, in practice, maps that support
    // put() also support Entry.setValue().
    if (!supportsPut) {
      return;
    }

    Map<K, V> map;
    V valueToSet;
    try {
      map = makePopulatedMap();

To learn more about <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic, check its docs</a>.

///

**FastAPI** is all based on Pydantic.

You will see a lot more of all this in practice in the [Tutorial - User Guide](tutorial/index.md){.internal-link target=_blank}.

/// tip

    String exceptionFile = noSuchFileException.getFile();
    if (exceptionFile == null) {
      /*
       * It's not clear whether this happens in practice, especially with the filesystem
       * implementations that are built into java.nio.
       */
      return null;
    }
    Path parentPath = getParentPath(path);
    if (parentPath == null) {
      /*

    String exceptionFile = noSuchFileException.getFile();
    if (exceptionFile == null) {
      /*
       * It's not clear whether this happens in practice, especially with the filesystem
       * implementations that are built into java.nio.
       */
      return null;
    }
    Path parentPath = getParentPath(path);
    if (parentPath == null) {
      /*

  // introduce a very specific kind of data-race. And given the other operations performed by these
  // methods that involve volatile read/write operations, in practice there is no issue. Also, the
  // way in such a visibility issue would surface is most likely as a failure of cancel() to
  // propagate to the input. Cancellation propagation is fundamentally racy so this is fine.
  //

  // introduce a very specific kind of data-race. And given the other operations performed by these
  // methods that involve volatile read/write operations, in practice there is no issue. Also, the
  // way in such a visibility issue would surface is most likely as a failure of cancel() to
  // propagate to the input. Cancellation propagation is fundamentally racy so this is fine.
  //