@Override
          @CheckForNull
          protected Entry<E> computeNext() {
            if (iterator1.hasNext()) {
              Entry<? extends E> entry1 = iterator1.next();
              E element = entry1.getElement();
              int count = Math.max(entry1.getCount(), multiset2.count(element));
              return immutableEntry(element, count);
            }
            while (iterator2.hasNext()) {

          #   - See https://github.com/ossf/scorecard-action#publishing-results.
          # For private repositories:
          #   - `publish_results` will always be set to `false`, regardless
          #     of the value entered here.
          publish_results: true

      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
      # format to the repository Actions tab.

     * Call this when an error occurs during class loading.
     * This method only records the error but doesn't throw any exceptions.
     * The exception will be rethrown (wrapped in a ClassNotFoundException) when this thread enters or exits the class loading scope.
     * <p>
     * This may be called outside the class loading scope.
     *
     * @param className the name of the class that was loading
     * @param cause the original exception

    }

    override fun leaveDynamicCall(entryPoint: Any) {
        val innermostCall = currentThreadState.callStack.pop()
        check(entryPoint == innermostCall.entryPoint) { "Mismatched enter-leave calls in DynamicCallProjectIsolationProblemReporting" }
    }

    override fun unreportedProblemInCurrentCall(problemKey: Any): Boolean {
        val currentThreadCallStack = currentThreadState.callStack

        private final Map<Key<?>, Object> provided = new HashMap<>();
    }

    private final ThreadLocal<LinkedList<ScopeState>> values = new ThreadLocal<>();

    public MojoExecutionScope() {}

    public void enter() {
        LinkedList<ScopeState> stack = values.get();
        if (stack == null) {
            stack = new LinkedList<>();
            values.set(stack);
        }
        stack.addFirst(new ScopeState());
    }

        public Collection<CachingProvider<?>> providers() {
            return provided.values();
        }
    }

    private final List<ScopeState> values = new CopyOnWriteArrayList<>();

    public void enter() {
        values.add(0, new ScopeState());
    }

    protected ScopeState getScopeState() {
        if (values.isEmpty()) {

  }

  static void checkNoConflict(
      boolean safe, String conflictDescription, Object entry1, Object entry2) {
    if (!safe) {
      throw conflictException(conflictDescription, entry1, entry2);
    }
  }

  static IllegalArgumentException conflictException(
      String conflictDescription, Object entry1, Object entry2) {
    return new IllegalArgumentException(

    val id = identities.getId(reference)
    if (id != null) {
        writeSmallInt(id)
    } else {
        val newId = identities.putInstance(reference)
        writeSmallInt(newId)
        circularReferences.enter(reference)
        try {
            encode(reference)
        } finally {
            circularReferences.leave(reference)
        }
    }
}

	}
	for _, relations := range embeddedRelations.EmbeddedRelations {
		names = append(names, embeddedValues(relations)...)
	}
	return names
}

// preloadEntryPoint enters layer by layer. It will call real preload if it finds the right entry point.
// If the current relationship is embedded or joined, current query will be ignored.
//
//nolint:cyclop

But in this case, the same **FastAPI** application will handle the API and the authentication.

So, let's review it from that simplified point of view:

* The user types the `username` and `password` in the frontend, and hits `Enter`.
* The frontend (running in the user's browser) sends that `username` and `password` to a specific URL in our API (declared with `tokenUrl="token"`).