* FutureTask#done() done()} method. For similar functionality, call {@link #addListener}.
 *
 * <p>Few users should use this class. It is intended primarily for those who are implementing an
 * {@code ExecutorService}. Most users should call {@link ListeningExecutorService#submit(Callable)
 * ListeningExecutorService.submit} on a service obtained from {@link
 * MoreExecutors#listeningDecorator}.
 *

    try {
      assertFalse("add(present) should return false or throw", collection.add(e0()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require(
      value = {SUPPORTS_ADD, ALLOWS_NULL_VALUES},
      absent = RESTRICTS_ELEMENTS)
  public void testAdd_nullSupported() {
    assertTrue("add(null) should return true", collection.add(null));

    try {
      assertFalse("add(present) should return false or throw", collection.add(e0()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require(
      value = {SUPPORTS_ADD, ALLOWS_NULL_VALUES},
      absent = RESTRICTS_ELEMENTS)
  public void testAdd_nullSupported() {
    assertTrue("add(null) should return true", collection.add(null));

              case 0:
                return 0;
              case 1:
                return 1;
              case 2:
                return endOfData();
              default:
                throw new AssertionError("Should not have been invoked again");
            }
          }
        };

    assertTrue(iter.hasNext());
    assertEquals(0, (int) iter.next());

    // verify idempotence of hasNext()

		scheme = strings.ToLower(proto)
	} else if proto := r.Header.Get(forwarded); proto != "" {
		// match should contain at least two elements if the protocol was
		// specified in the Forwarded header. The first element will always be
		// the 'for=', which we ignore, subsequently we proceed to look for
		// 'proto=' which should precede right after `for=` if not
		// we simply ignore the values and return empty. This is in line

    /**
     * Determines whether a stub model should be allowed when the POM is missing or unreadable.
     * A stub model contains only minimal information derived from the project's coordinates.
     *
     * @return true if a stub model should be allowed, false otherwise
     */
    boolean isAllowStubModel();

    /**
     * Determines whether the project builder should recursively build parent/child projects.

                .withTest(tempFile.toFile())
                .ignoreComments()
                .ignoreWhitespace()
                .build();
        assertFalse(diff.hasDifferences(), "XML files should be identical: " + diff.toString());
    }

    @Test
    void transformJarConsumerPom() throws Exception {
        RepositorySystemSession systemSessionMock = Mockito.mock(RepositorySystemSession.class);

          <description>
            Whether Maven should attempt to interact with the user for input.
          </description>
          <type>boolean</type>
          <defaultValue>true</defaultValue>
        </field>
        <field>
          <name>usePluginRegistry</name>
          <version>1.0.0+</version>
          <description>
            Whether Maven should use the {@code plugin-registry.xml} file to manage plugin versions.

    int initialSize = getList().size();
    assertTrue("remove(present) should return true", getList().remove(duplicate));
    assertTrue(
        "After remove(duplicate), a list should still contain the duplicate element",
        getList().contains(duplicate));
    assertFalse(
        "remove(duplicate) should remove the first instance of the "
            + "duplicate element in the list",

## Status

ACCEPTED

## Consequences

* The configuration cache serialization infrastructure should be used for all serialization.
* Existing usages of Serializer outside of this infrastructure should be migrated to use it.
* Existing usages of Java serialization should be migrated to use it.
* It is ok for Serializer to be used as a replacement for Java serialization as a migration step.