SmbPipeHandleImpl handle = newHandleWithBasicStubs(0, "\\\\pipe\\\\sess");
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);

        // Use doThrow for unchecked exception wrapping the CIFSException
        doThrow(new RuntimeException(new CIFSException("session fail"))).when(tree).getSession();

        Exception ex = assertThrows(Exception.class, handle::getSessionKey);

    public E next() {
      if (cursor >= array.length) throw new NoSuchElementException();
      lastRet = cursor;

      // array comes from q.toArray() and so should have only E's in it
      @SuppressWarnings("unchecked")
      E e = (E) array[cursor++];
      return e;
    }

    @Override
    public void remove() {
      if (lastRet < 0) throw new IllegalStateException();
      Object x = array[lastRet];

      D genericDeclaration, String name, Type[] bounds) {
    TypeVariableImpl<D> typeVariableImpl = new TypeVariableImpl<>(genericDeclaration, name, bounds);
    @SuppressWarnings("unchecked")
    TypeVariable<D> typeVariable =
        Reflection.newProxy(
            TypeVariable.class, new TypeVariableInvocationHandler(typeVariableImpl));
    return typeVariable;
  }

  /**

    // type.
    checkNotNull(enumClass);
    checkNotNull(policy);
    @SuppressWarnings("unchecked")
    Map<E, LockGraphNode> lockGraphNodes = (Map<E, LockGraphNode>) getOrCreateNodes(enumClass);
    return new WithExplicitOrdering<>(policy, lockGraphNodes);
  }

  @SuppressWarnings("unchecked")
  private static <E extends Enum<E>> Map<? extends E, LockGraphNode> getOrCreateNodes(
      Class<E> clazz) {

           * handle either reference, so it's safe to circumvent compile-time type checking.
           */
          @SuppressWarnings("unchecked")
          Equivalence<Object> equivalence = (Equivalence<Object>) this.equivalence;
          return equivalence.equivalent(this.reference, that.reference);
        }
      }
      return false;
    }

        });
    }

    protected <BUILDER> int[] delegateBatchRequest(final List<? extends Entity> entityList, Function<EsAbstractEntity, BUILDER> call) {
        @SuppressWarnings("unchecked")
        final BulkList<? extends Entity, BUILDER> bulkList = (BulkList<? extends Entity, BUILDER>) entityList;
        final RequestOptionCall<BUILDER> builderEntityCall = bulkList.getEntityCall();

    setImplementation(ThreadFactory.class, Dummies.DummyThreadFactory.class);
    setImplementation(Executor.class, Dummies.DummyExecutor.class);
  }

  @SuppressWarnings("unchecked") // it's a subtype map
  private static <T> @Nullable Class<? extends T> getImplementation(Class<T> type) {
    return (Class<? extends T>) implementations.get(type);
  }

     *
     * @param str
     *            The string to convert.
     * @param locale
     *            The locale.
     * @return The converted {@link Date}.
     */
    @SuppressWarnings("unchecked")
    protected static Date toDate(final String str, final Locale locale) {
        for (final DateFormat format : MultiIterator.iterable(new DateFormatIterator(locale), new PlainDateFormatIterator(str, locale))) {

     *
     * @param str
     *            The string to convert.
     * @param locale
     *            The locale.
     * @return The converted {@link Date}.
     */
    @SuppressWarnings("unchecked")
    protected static Date toDate(final String str, final Locale locale) {
        for (final DateFormat format : MultiIterator.iterable(new DateFormatIterator(locale), new PlainDateFormatIterator(str, locale))) {

        oos.close();

        // Deserialize
        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
        ObjectInputStream ois = new ObjectInputStream(bais);
        @SuppressWarnings("unchecked")
        TestAccessResultData<String> deserialized = (TestAccessResultData<String>) ois.readObject();
        ois.close();

        // Verify
        assertEquals("test data", new String(deserialized.getData()));