@Override
    protected Set<String> create(String[] elements) {
      return ImmutableSet.copyOf(elements);
    }
  }

  public static class ImmutableSetUnsizedBuilderGenerator extends TestStringSetGenerator {
    @Override
    protected Set<String> create(String[] elements) {
      ImmutableSet.Builder<String> builder = ImmutableSet.builder();

And an `APIRoute` subclass to use that custom request class.

### Create a custom `GzipRequest` class { #create-a-custom-gziprequest-class }

/// tip

This is a toy example to demonstrate how it works, if you need Gzip support, you can use the provided [`GzipMiddleware`](../advanced/middleware.md#gzipmiddleware).

///

   */

  public void testSize() {
    int unused = create().size();
  }

  public void testIsEmpty() {
    boolean unused = create().isEmpty();
  }

  public void testRemove() {
    create().remove(null);
  }

  public void testClear() {
    create().clear();
  }

  public void testContainsKey() {
    boolean unused = create().containsKey(null);
  }

    return new TestEnumMultisetGenerator() {
      @Override
      protected Multiset<AnEnum> create(AnEnum[] elements) {
        return (elements.length == 0)
            ? EnumMultiset.create(AnEnum.class)
            : EnumMultiset.create(asList(elements));
      }
    };
  }

  private enum Color {
    BLUE,
    RED,
    YELLOW,
    GREEN,
    WHITE
  }

        .addEqualityGroup(BloomFilter.create(byteArrayFunnel(), 200, 0.01))
        .addEqualityGroup(BloomFilter.create(byteArrayFunnel(), 200, 0.02))
        .addEqualityGroup(BloomFilter.create(unencodedCharsFunnel(), 100, 0.01))
        .addEqualityGroup(BloomFilter.create(unencodedCharsFunnel(), 100, 0.02))
        .addEqualityGroup(BloomFilter.create(unencodedCharsFunnel(), 200, 0.01))

            ContiguousSet.create(Range.closed(1, 3), integers()),
            ContiguousSet.closed(1, 3),
            ContiguousSet.create(Range.closedOpen(1, 4), integers()),
            ContiguousSet.closedOpen(1, 4),
            ContiguousSet.create(Range.openClosed(0, 3), integers()),
            ContiguousSet.create(Range.open(0, 4), integers()),
            ContiguousSet.create(Range.closed(1, 3), NOT_EQUAL_TO_INTEGERS),

      <role>org.apache.maven.artifact.resolver.ArtifactResolver</role>
      <role-hint>default</role-hint>
      <implementation>org.apache.maven.artifact.resolver.DefaultArtifactResolver</implementation>
      <isolated-realm>false</isolated-realm>
      <requirements>
        <requirement>
          <role>org.codehaus.plexus.logging.Logger</role>
          <role-hint>default</role-hint>
          <field-name>logger</field-name>
        </requirement>

  /** Creates a new, empty {@code HashMultiset} using the default initial capacity. */
  public static <E extends @Nullable Object> HashMultiset<E> create() {
    return create(ObjectCountHashMap.DEFAULT_SIZE);
  }

  /**
   * Creates a new, empty {@code HashMultiset} with the specified expected number of distinct
   * elements.
   *

	users := []User{*GetUser("delete", Config{}), *GetUser("delete", Config{}), *GetUser("delete", Config{})}

	if err := DB.Create(&users).Error; err != nil {
		t.Errorf("errors happened when create: %v", err)
	}

	for _, user := range users {
		if user.ID == 0 {
			t.Fatalf("user's primary key should has value after create, got : %v", user.ID)
		}
	}

	if res := DB.Delete(&users[1]); res.Error != nil || res.RowsAffected != 1 {

Swagger UI will handle it behind the scenes for you, but it needs this "redirect" helper.

///

### Create a *path operation* to test it { #create-a-path-operation-to-test-it }

Now, to be able to test that everything works, create a *path operation*:

{* ../../docs_src/custom_docs_ui/tutorial001_py310.py hl[36:38] *}