And dependencies can be created in a very simple and intuitive way that allows you to just import the Python packages you need, and integrate them with your API functions in a couple of lines of code, *literally*.

You will see examples of this in the next chapters, about relational and NoSQL databases, security, etc.

## **FastAPI** compatibility { #fastapi-compatibility }

				etag = etag[len(etag)-32:]
			}
		}
	}

	// We must not use the http.Header().Set method here because some (broken)
	// clients expect the ETag header key to be literally "ETag" - not "Etag" (case-sensitive).
	// Therefore, we have to set the ETag directly as map entry.
	w.Header()[xhttp.ETag] = []string{"\"" + etag + "\""}
	hash.TransferChecksumHeader(w, r)

		return
	}

	etag := getDecryptedETag(formValues, objInfo, false)

	// We must not use the http.Header().Set method here because some (broken)
	// clients expect the ETag header key to be literally "ETag" - not "Etag" (case-sensitive).
	// Therefore, we have to set the ETag directly as map entry.
	w.Header()[xhttp.ETag] = []string{`"` + etag + `"`}

	// Set the relevant version ID as part of the response header.

	}

	setPutObjHeaders(w, objInfo, false, r.Header)
	// We must not use the http.Header().Set method here because some (broken)
	// clients expect the x-amz-copy-source-version-id header key to be literally
	// "x-amz-copy-source-version-id"- not in canonicalized form, preserve it.
	if srcOpts.VersionID != "" {
		w.Header()[strings.ToLower(xhttp.AmzCopySourceVersionID)] = []string{srcOpts.VersionID}
	}

    SetMultimapTestSuiteBuilder<K, V> result = new SetMultimapTestSuiteBuilder<>();
    result.usingGenerator(generator);
    return result;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());
    testers.add(SetMultimapAsMapTester.class);

    SetMultimapTestSuiteBuilder<K, V> result = new SetMultimapTestSuiteBuilder<>();
    result.usingGenerator(generator);
    return result;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());
    testers.add(SetMultimapAsMapTester.class);

    NavigableMapTestSuiteBuilder<K, V> result = new NavigableMapTestSuiteBuilder<>();
    result.usingGenerator(generator);
    return result;
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());
    testers.add(NavigableMapNavigationTester.class);

  public static <E> ListTestSuiteBuilder<E> using(TestListGenerator<E> generator) {
    return new ListTestSuiteBuilder<E>().usingGenerator(generator);
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());

    testers.add(CollectionSerializationEqualTester.class);

  /**
   * Parses a serialized trie representation of a map of reversed public suffixes into an immutable
   * map of public suffixes. The encoded trie string may be broken into multiple chunks to avoid the
   * 64k limit on string literal size. In-memory strings can be much larger (2G).
   */
  static ImmutableMap<String, PublicSuffixType> parseTrie(CharSequence... encodedChunks) {
    String encoded = DIRECT_JOINER.join(encodedChunks);

  public static <E> ListTestSuiteBuilder<E> using(TestListGenerator<E> generator) {
    return new ListTestSuiteBuilder<E>().usingGenerator(generator);
  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = copyToList(super.getTesters());

    testers.add(CollectionSerializationEqualTester.class);