```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.

              return true;
            }
          };

      @Override
      public void validateClass(Class<? extends Exception> exceptionClass) {
        isValidClass.get(exceptionClass); // throws if invalid; returns safely (and caches) if valid
      }
    }

    enum WeakSetValidator implements GetCheckedTypeValidator {
      INSTANCE;

      /*

    }

    // ===================================================================================
    //                                                                       Invalid Query
    //                                                                       =============
    protected void checkEsInvalidQuery(String name, Object value) {

    public void test_init_failure() {
        ThumbnailManager manager = new ThumbnailManager() {
            @Override
            public void init() {
                baseDir = new File("/invalid/path/that/cannot/be/created");
                if (!baseDir.isDirectory()) {
                    throw new FessSystemException("Not found: " + baseDir.getAbsolutePath());
                }
            }
        };

import com.google.common.testing.EqualsTester;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests CacheBuilderSpec. TODO(user): tests of a few invalid input conditions, boundary
 * conditions.
 *
 * @author Adam Winer
 */
@NullUnmarked
public class CacheBuilderSpecTest extends TestCase {
  public void testParse_empty() {
    CacheBuilderSpec spec = parse("");

            options = WRITE_OPTIONS;
            access = SmbConstants.FILE_READ_DATA | SmbConstants.FILE_WRITE_DATA;
        } else {
            throw new IllegalArgumentException("Invalid mode");
        }
        file.open(openFlags, access, SmbFile.ATTR_NORMAL, options);
        readSize = file.tree.session.transport.rcv_buf_size - 70;
        writeSize = file.tree.session.transport.snd_buf_size - 70;

                response.readDataWireFormat(buffer, 0, buffer.length);
            });
        }

        @Test
        @DisplayName("Should handle buffer with invalid offset")
        void testReadDataWireFormatInvalidOffset() {
            byte[] buffer = createValidDfsReferralBuffer();

            assertThrows(ArrayIndexOutOfBoundsException.class, () -> {

    }

    public void test_getLanguageItems_cacheException() {
        final List<Map<String, String>> items = systemHelper.getLanguageItems(new Locale("invalid"));
        assertNotNull(items);
        // The cache may work fine even with invalid locale, so check size is reasonable
        assertTrue(items.size() >= 1);
    }

    public void test_getHostname_unknownHost() {

    stream.defaultReadObject();
    int keyCount = stream.readInt();
    if (keyCount < 0) {
      throw new InvalidObjectException("Invalid key count " + keyCount);
    }
    ImmutableMap.Builder<Object, ImmutableList<Object>> builder = ImmutableMap.builder();
    int tmpSize = 0;

    for (int i = 0; i < keyCount; i++) {

	// See #26462, #25907, #47276, #48398 for history.
}

// The readOp constants describe the last action performed on
// the buffer, so that UnreadRune and UnreadByte can check for
// invalid usage. opReadRuneX constants are chosen such that
// converted to int they correspond to the rune size that was read.
type readOp int8

// Don't use iota for these, as the values need to correspond with the