verify(tree, times(1)).close();
    }

    @Test
    @DisplayName("unwrap: returns self for compatible type and throws for incompatible")
    @SuppressWarnings({ "rawtypes", "unchecked" })
    void testUnwrap() {
        SmbSessionImpl session = newSession();

        // Happy path: ask for SmbSession and SmbSessionInternal
        assertSame(session, session.unwrap(SmbSessionInternal.class));

   * the source future indefinitely, so if the source future never completes, the adapter will never
   * complete either.
   *
   * <p>If the delegate future is interrupted or throws an unexpected unchecked exception, the
   * listeners will not be invoked.
   */
  private static final class ListenableFutureAdapter<V extends @Nullable Object>
      extends ForwardingFuture<V> implements ListenableFuture<V> {

    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }

    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }

     */
    public static <T> T[] add(final T[] array, final T obj) {
        assertArgumentNotNull("array", array);

        final int length = array.length;
        @SuppressWarnings("unchecked")
        final T[] newArray = (T[]) Array.newInstance(array.getClass().getComponentType(), length + 1);
        System.arraycopy(array, 0, newArray, 0, length);
        newArray[length] = obj;
        return newArray;

      this.delegate = checkNotNull(delegate);
    }

    @Override
    @ParametricNullness
    @SuppressWarnings("unchecked") // Cast from Supplier<Void> to Supplier<T> is always valid
    public T get() {
      // Because Supplier is read-heavy, we use the "double-checked locking" pattern.
      if (delegate != SUCCESSFULLY_COMPUTED) {
        synchronized (lock) {
          if (delegate != SUCCESSFULLY_COMPUTED) {

     * @param nonce The OpenID Connect nonce parameter.
     */
    protected void storeStateInSession(final HttpSession session, final String state, final String nonce) {
        @SuppressWarnings("unchecked")
        Map<String, StateData> stateMap = (Map<String, StateData>) session.getAttribute(STATES);
        if (stateMap == null) {
            stateMap = new HashMap<>();
            session.setAttribute(STATES, stateMap);

   * unchecked cast at some later point:
   *
   * {@snippet :
   * @SuppressWarnings("unchecked") // safe because of ::isInstance check
   * ImmutableList<NewType> result =
   *     (ImmutableList) stream.filter(NewType.class::isInstance).collect(toImmutableList());
   * }
   */
  @SuppressWarnings("unchecked")
  @GwtIncompatible // Class.isInstance

 * the License.
 */

package com.google.common.base;

import com.google.common.annotations.GwtCompatible;
import org.jspecify.annotations.Nullable;

/** A utility method to perform unchecked casts to suppress errors produced by nullness analyses. */
@GwtCompatible
final class NullnessCasts {
  /**
   * Accepts a {@code @Nullable T} and returns a plain {@code T}, without performing any check that

    }

    @Override
    public Field getField() {
        return field;
    }

    @Override
    public String getFieldName() {
        return fieldName;
    }

    @SuppressWarnings("unchecked")
    @Override
    public <T> Class<T> getFieldType() {
        return (Class<T>) fieldType;
    }

    @Override
    public boolean isPublic() {
        return FieldUtil.isPublicField(field);
    }