* method wraps the elements in the input sets (which may contain null) as Optionals, calls
   * Sets.cartesianProduct with those, then transforms the result to unwrap the Optionals.
   */
  private Iterable<List<Object>> buildCartesianProduct(Set<?>... sets) {
    List<Set<Optional<?>>> optionalSets = Lists.newArrayListWithExpectedSize(sets.length);
    for (Set<?> set : sets) {

    public SmbTreeImpl acquire() {
        return acquire(true);
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTree#unwrap(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    @Override
    public <T extends SmbTree> T unwrap(final Class<T> type) {
        if (type.isAssignableFrom(this.getClass())) {
            return (T) this;
        }
        throw new ClassCastException();

        assertEquals("Domain group", sid.getTypeText());
    }

    /**
     * Test the unwrap method.
     *
     * @throws SmbException if the SID string is invalid
     */
    @Test
    void testUnwrap() throws SmbException {
        SID sid = new SID(adminSidString);
        SID unwrapped = sid.unwrap(SID.class);
        assertNotNull(unwrapped);
        assertEquals(sid, unwrapped);

                this.type = SmbConstants.TYPE_WORKGROUP;
            } else {
                try {
                    final NetbiosAddress nbaddr = getAddress().unwrap(NetbiosAddress.class);
                    if (nbaddr != null) {
                        final int code = nbaddr.getNameType();
                        if (code == 0x1d || code == 0x1b) {

    ASSERT_EQ(TF_GetCode(status.get()), TF_OK) << TF_Message(status.get());

    auto cpu_arg =
        tensorflow::TensorHandleFromInterface(tensorflow::unwrap(hcpu));
    auto gpu_arg =
        tensorflow::TensorHandleFromInterface(tensorflow::unwrap(hgpu));
    auto gpu_device = gpu_arg->device();
    ASSERT_FALSE(cpu_arg->HasLocalMirror(gpu_device));

    TFE_Op* matmul = MatMulOp(ctx, hcpu, hgpu);

pkg math/rand/v2, func Uint() uint #61716
pkg math/rand/v2, method (*ChaCha8) Read([]uint8) (int, error) #67059
pkg math/rand/v2, method (*Rand) Uint() uint #61716
pkg net, method (*DNSError) Unwrap() error #63116
pkg net, method (*TCPConn) SetKeepAliveConfig(KeepAliveConfig) error #62254
pkg net, type DNSError struct, UnwrapErr error #63116
pkg net, type Dialer struct, KeepAliveConfig KeepAliveConfig #62254

        return this.usageCount.get() > 0;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbSession#unwrap(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    @Override
    public <T extends SmbSession> T unwrap(Class<T> type) {
        if (type.isAssignableFrom(this.getClass())) {
            return (T) this;
        }
        throw new ClassCastException();

    }

    @Nested
    @DisplayName("DosFileFilter integration tests")
    class DosFileFilterTests {

        @Test
        @DisplayName("DosFileFilter wildcard and attributes are preserved through unwrap")
        void dosFileFilter_preservesFieldsThroughUnwrap() throws Exception {
            // Test with various wildcard patterns and attribute masks
            String[] wildcards = { "*.txt", "test*", null };

  ASSERT_EQ(TF_OK, TF_GetCode(status.get())) << TF_Message(status.get());

  // Test that full type information can be accessed.
  auto outs = unwrap(add_outputs);
  auto h = outs->outputs[0];
  ASSERT_NE(h, nullptr);
  ASSERT_EQ(h->FullType().type_id(), TFT_UNSET);
  ASSERT_EQ(unwrap(inputs[0])->FullType().type_id(), TFT_UNSET);

  // Clean up operation and inputs.
  TF_DeleteAbstractOp(add_op);

pkg go/types, func NewTypeParam(*TypeName, Type) *TypeParam
pkg go/types, func NewUnion([]*Term) *Union
pkg go/types, method (*ArgumentError) Error() string
pkg go/types, method (*ArgumentError) Unwrap() error
pkg go/types, method (*Interface) IsComparable() bool
pkg go/types, method (*Interface) IsImplicit() bool
pkg go/types, method (*Interface) IsMethodSet() bool
pkg go/types, method (*Interface) MarkImplicit()