*/
    protected String normalizeCanonicalUrl(final String baseUrl, final String canonicalUrl) {
        try {
            final URI baseUri = URI.create(baseUrl);
            final String resolveTarget = canonicalUrl.startsWith(":") ? baseUri.getScheme() + canonicalUrl : canonicalUrl;
            return baseUri.resolve(resolveTarget).toString();
        } catch (final IllegalArgumentException e) {

    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */
    int getLineNumber();

    /**

    /** The paths to include during crawling (pattern-based). */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String includedPaths;

    /** The paths to exclude during crawling (pattern-based). */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String excludedPaths;

    /** The document paths to include in search results (pattern-based). */
    @CustomSize(maxKey = "form.admin.max.input.size")

     *            {@link ModelProblem.Severity#ERROR}.
     * @param source The source of the problem, may be {@code null}.
     * @param lineNumber The one-based index of the line containing the error or {@code -1} if unknown.
     * @param columnNumber The one-based index of the column containing the error or {@code -1} if unknown.
     * @param exception The exception that caused this problem, may be {@code null}.
     */

* Based on Python type hints.
* Validation and documentation from these types.
* Dependency Injection system.

It doesn't use a data validation, serialization and documentation third-party library like Pydantic, it has its own. So, these data type definitions would not be reusable as easily.

     */
    @Resource
    protected HttpServletRequest request;

    /**
     * Returns an empty OptionalThing for login manager since API actions
     * use token-based authentication instead of traditional session-based login.
     *
     * @return empty OptionalThing indicating no login manager is used
     */
    @Override
    protected OptionalThing<LoginManager> myLoginManager() {

    String getSource();

    /**
     * Gets the one-based index of the line containing the problem. The line number should refer to some text file that
     * is given by {@link #getSource()}.
     *
     * @return The one-based index of the line containing the problem or a non-positive value if unknown.
     */
    int getLineNumber();

    /**

  /** Returns the platform preferred implementation of a map based on a hash table. */
  static <K extends @Nullable Object, V extends @Nullable Object>
      Map<K, V> newHashMapWithExpectedSize(int expectedSize) {
    return CompactHashMap.createWithExpectedSize(expectedSize);
  }

  /**
   * Returns the platform preferred implementation of an insertion ordered map based on a hash
   * table.
   */

# Features { #features }

## FastAPI features { #fastapi-features }

**FastAPI** gives you the following:

### Based on open standards { #based-on-open-standards }

  /** Returns the platform preferred implementation of a map based on a hash table. */
  static <K extends @Nullable Object, V extends @Nullable Object>
      Map<K, V> newHashMapWithExpectedSize(int expectedSize) {
    return Maps.newHashMapWithExpectedSize(expectedSize);
  }

  /**
   * Returns the platform preferred implementation of an insertion ordered map based on a hash
   * table.
   */