* necessarily populated with header data because they're not writing
             * the header, only their body. But for whatever reason one might wish
             * to populate fields if the writeXxx operation needs this header data
             * for whatever reason. I copy over the uid here so it appears correct
             * in logging output. Logging of andx segments of messages inadvertantly

```Python
some_variable: PlaneItem | CarItem
```

But if we put that in the assignment `response_model=PlaneItem | CarItem` we would get an error, because Python would try to perform an **invalid operation** between `PlaneItem` and `CarItem` instead of interpreting that as a type annotation.

## List of models { #list-of-models }

The same way, you can declare responses of lists of objects.

         * @param reader The reader.
         */
        public TextNormalizeContext(final Reader reader) {
            this.reader = reader;
        }

        /**
         * Executes the text processing operation on the provided reader.
         *
         * This method reads characters from the reader and processes them according to the following rules:
         * - ISO control characters and space characters are treated as spaces.

    putEdge(N2, N1);
    assertThat(graph.outDegree(N1)).isEqualTo(3);
  }

  // Stable order tests

  // Note: Stable order means that the ordering doesn't change between iterations and versions.
  // Ideally, the ordering in test should never be updated.
  @Test
  public void stableIncidentEdgeOrder_edges_returnsInStableOrder() {

/// tip | Tipp

Beachten Sie, dass ähnlich wie bei [Abhängigkeiten in *Pfadoperation-Dekoratoren*](dependencies/dependencies-in-path-operation-decorators.md){.internal-link target=_blank} kein Wert an Ihre *Pfadoperation-Funktion* übergeben wird.

///

Das Endergebnis ist, dass die Pfade für diese Artikel jetzt wie folgt lauten:

* `/items/`

          <description>Flags this Mojo to require online mode for its operation.</description>
          <defaultValue>false</defaultValue>
        </field>
        <field>
          <name>onlineRequired</name>
          <version>2.0.0+</version>
          <type>boolean</type>
          <description>Flags this Mojo to require online mode for its operation.</description>
          <defaultValue>false</defaultValue>
        </field>

        SuggestCreator.Options options = new SuggestCreator.Options();
        assertNotNull(options);
    }

    // Test purge success
    public void test_purge_success() {
        // Test successful purge operation
        SuggestCreator.Options options = new SuggestCreator.Options();
        assertNotNull(options);
    }

    // Test purge with exception
    public void test_purge_withException() {

```Python
some_variable: PlaneItem | CarItem
```

Aber wenn wir das in der Zuweisung `response_model=PlaneItem | CarItem` machen, erhalten wir eine Fehlermeldung, da Python versucht, eine **ungültige Operation** zwischen `PlaneItem` und `CarItem` durchzuführen, statt es als Typannotation zu interpretieren.

## Listen von Modellen

Genauso können Sie eine Response deklarieren, die eine Liste von Objekten ist.

    class PerformanceTests {

        @RepeatedTest(value = 10, name = "Repeated encoding/decoding stability test {currentRepetition}/{totalRepetitions}")
        @DisplayName("Encoding and decoding is stable across multiple iterations")
        void testEncodingDecodingStability() throws Exception {
            ASN1ObjectIdentifier[] mechs = new ASN1ObjectIdentifier[] { OID_KRB, OID_NTLM };

  // unrunnable.
  for (auto it : graph->sessions) {
    mutex_lock session_lock(it.first->mu);
    if (it.first->last_num_graph_nodes > op.node.id()) {
      it.second = strings::StrCat(
          "Operation '", op.node.DebugString(), "' was changed by ",
          mutation_type,
          " after it was run by a session. This mutation will have no effect, "
          "and will trigger an error in the future. Either don't modify "