import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.ListIterator;
import java.util.Map.Entry;
import java.util.RandomAccess;
import java.util.Set;

    assertTrue(consumingIterator.hasNext());
    assertThat(list).containsExactly("a", "b").inOrder();
    assertEquals("a", consumingIterator.next());
    assertThat(list).contains("b");

    assertTrue(consumingIterator.hasNext());
    assertEquals("b", consumingIterator.next());
    assertThat(list).isEmpty();

    assertFalse(consumingIterator.hasNext());
  }

  @GwtIncompatible // ?

    for (V value : valueCollection) {
      assertTrue(map.containsValue(value));
      assertTrue(allowsNullValues || (value != null));
    }

    assertEquals(map.size(), entrySet.size());
    assertEquals(entrySet.size() == 0, entrySet.isEmpty());
    assertEquals(!entrySet.isEmpty(), entrySet.iterator().hasNext());
    assertEntrySetNotContainsString(entrySet);

 * [Adam Langley's Weblog][langley]. Pins are either base64 SHA-256 hashes as in
 * [HTTP Public Key Pinning (HPKP)][rfc_7469] or SHA-1 base64 hashes as in Chromium's
 * [static certificates][static_certificates].
 *
 * ## Setting up Certificate Pinning
 *
 * The easiest way to pin a host is turn on pinning with a broken configuration and read the

    it.remove();
    assertFalse(mmHeap.contains(2));
    assertTrue(it.hasNext());
    assertEquals((Integer) 3, it.next());
    assertTrue(it.hasNext());
    assertEquals((Integer) 30, it.next());
    assertTrue(it.hasNext());
    assertEquals((Integer) 40, it.next());
    assertFalse(it.hasNext());
    assertEquals(6, mmHeap.size());

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.smb;

import java.io.IOException;
import java.security.Principal;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Locale;
import java.util.Objects;
import java.util.Set;

import javax.security.auth.Subject;
import javax.security.auth.kerberos.KerberosPrincipal;

  UnmodifiableIterator<K> keyIterator() {
    UnmodifiableIterator<Entry<K, V>> entryIterator = entrySet().iterator();
    return new UnmodifiableIterator<K>() {
      @Override
      public boolean hasNext() {
        return entryIterator.hasNext();
      }

      @Override
      public K next() {
        return entryIterator.next().getKey();
      }
    };
  }

    assertTrue(consumingIterator.hasNext());
    assertThat(list).containsExactly("a", "b").inOrder();
    assertEquals("a", consumingIterator.next());
    assertThat(list).contains("b");

    assertTrue(consumingIterator.hasNext());
    assertEquals("b", consumingIterator.next());
    assertThat(list).isEmpty();

    assertFalse(consumingIterator.hasNext());
  }

  @GwtIncompatible // ?

   */
  @CanIgnoreReturnValue
  public <A extends Appendable> A appendTo(A appendable, Iterator<?> parts) throws IOException {
    checkNotNull(appendable);
    if (parts.hasNext()) {
      appendable.append(toString(parts.next()));
      while (parts.hasNext()) {
        appendable.append(separator);
        appendable.append(toString(parts.next()));
      }
    }
    return appendable;
  }

  /**

  UnmodifiableIterator<K> keyIterator() {
    UnmodifiableIterator<Entry<K, V>> entryIterator = entrySet().iterator();
    return new UnmodifiableIterator<K>() {
      @Override
      public boolean hasNext() {
        return entryIterator.hasNext();
      }

      @Override
      public K next() {
        return entryIterator.next().getKey();
      }
    };
  }

  Spliterator<K> keySpliterator() {