assertNull(renewed, "renew() may return null for failed renewal");
        }
    }

    @Test
    @DisplayName("Mockito: verify renew() interaction and return value")
    void mockitoInteraction(@Mock CredentialsInternal returned, @Mock SmbRenewableCredentials renewable) {
        // Arrange: stub renew() to return a mocked CredentialsInternal
        when(renewable.renew()).thenReturn(returned);

        // Act: invoke renew()

        // With default lmCompatibility=3, getUnicodeHash returns empty array for NTLMv2
        NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("DOMAIN", "user", "password");
        byte[] challenge = { 1, 2, 3, 4, 5, 6, 7, 8 };
        byte[] hash = auth.getUnicodeHash(challenge);
        assertNotNull(hash);
        // For lmCompatibility 3,4,5 (NTLMv2), returns empty array
        assertEquals(0, hash.length);
    }

    @SuppressWarnings("unchecked")
    Class<T> wrapped = (Class<T>) PRIMITIVE_TO_WRAPPER_TYPE.get(type);
    return (wrapped == null) ? type : wrapped;
  }

  /**
   * Returns the corresponding primitive type of {@code type} if it is a wrapper type; otherwise
   * returns {@code type} itself. Idempotent.
   *
   * <pre>
   *     unwrap(Integer.class) == int.class
   *     unwrap(int.class) == int.class

     *
     * @return the operating system architecture (never null)
     */
    @Nonnull
    String arch();

    /**
     * Returns the OS version as reported by the system property "os.version".
     * The value is converted to lowercase for consistency.
     *
     * @return the operating system version (never null)
     */
    @Nonnull
    String version();

    /**

      return Objects.hash(function, supplier);
    }

    @Override
    public String toString() {
      return "Suppliers.compose(" + function + ", " + supplier + ")";
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * Returns a supplier which caches the instance retrieved during the first call to {@code get()}

 */
@GwtCompatible
public class Joiner {
  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(String separator) {
    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

   */
  interface Entry<E extends @Nullable Object> {

    /**
     * Returns the multiset element corresponding to this entry. Multiple calls to this method
     * always return the same instance.
     *
     * @return the element corresponding to this entry
     */
    @ParametricNullness
    E getElement();

    /**
     * Returns the count of the associated element in the underlying multiset. This count may either

      return delegate;
    }
    return new UnmodifiableSortedSetMultimap<>(delegate);
  }

  /**
   * Returns a synchronized (thread-safe) {@code ListMultimap} backed by the specified multimap.
   *
   * <p>You must follow the warnings described in {@link #synchronizedMultimap}.
   *
   * @param multimap the multimap to be wrapped
   * @return a synchronized view of the specified multimap

      return delegate;
    }
    return new UnmodifiableSortedSetMultimap<>(delegate);
  }

  /**
   * Returns a synchronized (thread-safe) {@code ListMultimap} backed by the specified multimap.
   *
   * <p>You must follow the warnings described in {@link #synchronizedMultimap}.
   *
   * @param multimap the multimap to be wrapped
   * @return a synchronized view of the specified multimap

   * all values is returned.
   *
   */
  CacheStats stats();

  /**
   * Returns a view of the entries stored in this cache as a thread-safe map. Modifications made to
   * the map directly affect the cache.
   *
   * <p>Iterators from the returned map are at least <i>weakly consistent</i>: they are safe for