* you may wish to override {@link #offer} to forward to this implementation.
   *
   * @since 7.0
   */
  protected boolean standardOffer(@ParametricNullness E e) {
    try {
      return add(e);
    } catch (IllegalStateException caught) {
      return false;
    }
  }

  /**
   * A sensible definition of {@link #peek} in terms of {@link #element}. If you override {@link

    }

    public void start() {
        try {
            server.start();
        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        }
    }

    public void stop() {
        try {
            server.stop();
            server.join();
        } catch (final Exception e) {
            throw new CrawlerSystemException(e);
        } finally {

                try {
                    stripper.writeText(doc, writer);
                    extractEmbeddedDocuments(doc, writer);
                    extractAnnotations(doc, writer);
                } catch (final Exception e) {
                    exceptionSet.add(e);
                } finally {
                    done.set(true);
                }
            }, Thread.currentThread().getName() + "-pdf");

        try {
            transformer.processXRobotsTag(responseData, new ResultData());
            fail();
        } catch (ChildUrlsException e) {
            assertTrue(e.getChildUrlList().isEmpty());
        } catch (Exception e) {
            fail();
        }
    }

    public void test_processXRobotsTag_noindex() throws Exception {

        try {
            try ( ASN1InputStream stream = new ASN1InputStream(new ByteArrayInputStream(token)) ) {
                sequence = ASN1Util.as(ASN1Sequence.class, stream);
            }
        }
        catch ( IOException e ) {
            throw new PACDecodingException("Malformed kerberos ticket", e);
        }

        Enumeration<?> fields = sequence.getObjects();
        while ( fields.hasMoreElements() ) {

     */
    public static JarFile create(final String file) {
        assertArgumentNotNull("file", file);

        try {
            return new JarFile(file);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * 指定されたJarファイルを読み取るための<code>JarFile</code>を作成して返します。
     *
     * @param file

     */
    public static ZipFile create(final String file) {
        assertArgumentNotEmpty("file", file);

        try {
            return new ZipFile(file);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * 指定されたZipファイルを読み取るための<code>ZipFile</code>を作成して返します。
     *
     * @param file

        try {
          testEqualsUsing(factory);
          return;
        } catch (ParameterNotInstantiableException e) {
          paramErrors.add(e);
        } catch (ParameterHasNoDistinctValueException e) {
          distinctValueErrors.add(e);
        } catch (InvocationTargetException e) {
          instantiationExceptions.add(e);
        } catch (FactoryMethodReturnsNullException e) {
          nullErrors.add(e);
        }

                try {
                  Future<?> future = executor.submit(incrementTask);
                  assertTrue(future.isDone());
                  assertEquals(1, threadLocalCount.get().intValue());
                } catch (Throwable t) {
                  throwableFromOtherThread.set(t);
                }
              }
            });

    otherThread.start();

  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_KEY_QUERIES)
  public void testRemove_nullKeyQueriesUnsupported() {
    try {
      assertFalse(getMap().remove(null, v3()));
    } catch (NullPointerException tolerated) {
      // since the operation would be a no-op, the exception is not required
    }
    expectUnchanged();
  }