return;
      }

      Document document = Jsoup.parse(response.body().string(), url.toString());
      for (Element element : document.select("a[href]")) {
        String href = element.attr("href");
        HttpUrl link = response.request().url().resolve(href);
        if (link == null) continue; // URL is either invalid or its scheme isn't http/https.

    Set<E> elementSet = getMultiset().elementSet();
    assertFalse(elementSet.contains(e3()));
    getMultiset().add(e3(), 4);
    assertTrue(elementSet.contains(e3()));
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testElementSetReflectsRemove() {
    Set<E> elementSet = getMultiset().elementSet();
    assertTrue(elementSet.contains(e0()));

Y Python tiene un tipo de datos especial para conjuntos de elementos únicos, el `set`.

Entonces podemos declarar `tags` como un conjunto de strings:

{* ../../docs_src/body_nested_models/tutorial003_py310.py hl[12] *}

Con esto, incluso si recibes un request con datos duplicados, se convertirá en un conjunto de elementos únicos.

    }

    @Override
    public List<@Nullable V> combine(List<@Nullable Present<V>> values) {
      List<@Nullable V> result = newArrayListWithCapacity(values.size());
      for (Present<V> element : values) {
        result.add(element != null ? element.value : null);
      }
      return unmodifiableList(result);
    }
  }

  /** The result of a successful {@code Future}. */

        }

        private void unwindTo(String element, TokenVisitor visitor) {
            if (elementStack.contains(element)) {
                while (!elementStack.getFirst().equals(element)) {
                    visitor.onEndHtmlElement(elementStack.removeFirst());
                }
                elementStack.removeFirst();
                visitor.onEndHtmlElement(element);
            }
        }

 */
package org.codelibs.core.xml;

import javax.xml.parsers.DocumentBuilder;

import junit.framework.TestCase;

import org.codelibs.core.io.ResourceUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**
 * @author higa
 *
 */
public class DomUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testGetContentsAsStream() throws Exception {

        override fun contains(element: Protocol?): Boolean {
          if (element == null) throw NullPointerException()
          return super.contains(element)
        }

        override fun indexOf(element: Protocol?): Int {
          if (element == null) throw NullPointerException()
          return super.indexOf(element)
        }
      } as List<Protocol>
    val client =

    for (int i = 0; i < getNumElements(); i++) {
      assertTrue(
          "toArray(overSizedE[]) should contain element " + expectedSubArray[i],
          subArray.contains(expectedSubArray[i]));
    }
    assertNull(
        "The array element immediately following the end of the collection should be nulled",
        array[getNumElements()]);

  // Load factor and capacity for "inner" (i.e. per node/edge element) hash sets or maps
  static final float INNER_LOAD_FACTOR = 1.0f;
  static final int INNER_CAPACITY = 2; // ceiling(EXPECTED_DEGREE / INNER_LOAD_FACTOR)

  // Error messages
  static final String NODE_NOT_IN_GRAPH = "Node %s is not an element of this graph.";
  static final String EDGE_NOT_IN_GRAPH = "Edge %s is not an element of this graph.";
  static final String NODE_REMOVED_FROM_GRAPH =

	VDUP	V8.B[17], V3.B8                                  // ERROR "register element index out of range 0 to 15"
	VDUP	V8.H[9], V3.H4                                   // ERROR "register element index out of range 0 to 7"
	VDUP	V8.H[9], V3.H8                                   // ERROR "register element index out of range 0 to 7"