* StackOverflowError: We can't reliably call setException(error).
     *
     * - Any kind of Error from a listener. Even if we could distinguish that case (by exposing some
     * extra state from AbstractFuture), our options are limited: A call to setException() would be
     * a no-op. We could log, but if that's what we really want, we should modify

    /*
     * In principle, a Multimap implementation could add e3 first before failing on the null. But
     * that seems unlikely enough to be worth complicating the test over, especially if there's any
     * chance that a permissive test could mask a bug.
     */
    expectUnchanged();
    // Be extra thorough in case internal state was corrupted by the expected null.

</blockquote>

## Investigation { #investigation }

By using all the previous alternatives I had the chance to learn from all of them, take ideas, and combine them in the best way I could find for myself and the teams of developers I have worked with.

For example, it was clear that ideally it should be based on standard Python type hints.

Also, the best approach was to use already existing standards.

}

repositories {
  mavenCentral()
}

dependencies {
  // TODO (https://github.com/square/okhttp/issues/8612) we will need a consistent version
  // 7.1.0 is used because it avoids this error
  // Could not create an instance of type aQute.bnd.gradle.BundleTaskExtension.
  // Cannot change attributes of configuration ':native-image-tests:compileClasspath' after it has been locked for mutation

/// tip

The next sections are **not necessarily "advanced"**.

And it's possible that for your use case, the solution is in one of them.

///

## Read the Tutorial first { #read-the-tutorial-first }

You could still use most of the features in **FastAPI** with the knowledge from the main [Tutorial - User Guide](../tutorial/index.md){.internal-link target=_blank}.

                is.setEncoding(responseData.getCharSet());
            }
            parser.parse(is);
        } catch (final Exception e) {
            throw new CrawlingAccessException("Could not parse " + responseData.getUrl(), e);
        }
        final Document document = parser.getDocument();

        final StringBuilder buf = new StringBuilder(1000);
        buf.append(getResultDataHeader());

                    return defaultValue;
                }

                return convertObj(paramValue, clazz);
            } catch (final Exception e) {
                logger.warn("Could not load init parameters: " + key + " from " + initParamMap, e);
            }
        }
        return defaultValue;
    }

    /**
     * Converts an object to the specified class type.

    public ParseRuntimeException(final ParseException cause) {
        super("ECL0050", asArray(cause), cause);
    }

    /**
     * Creates a {@link ParseRuntimeException}.
     *
     * @param s the string that could not be parsed
     */
    public ParseRuntimeException(final String s) {
        super("ECL0051", asArray(s));
    }

Nevertheless, it is already being used as a "standard" by several tools. This greatly improves interoperability, as you could switch Uvicorn for any other ASGI server (like Daphne or Hypercorn), or you could add ASGI compatible tools, like `python-socketio`.

///

/// check | **FastAPI** uses it to

Handle all the core web parts. Adding features on top.

     * </p>
     *
     * @param targetClass the target class (must not be {@literal null})
     * @return the class loader
     * @throws IllegalStateException if the class loader could not be obtained
     */
    public static ClassLoader getClassLoader(final Class<?> targetClass) {
        assertArgumentNotNull("targetClass", targetClass);