public EmptyIterator() {
        // Default constructor
    }

    /**
     * {@inheritDoc}
     *
     * @see java.util.Iterator#hasNext()
     */
    @Override
    public boolean hasNext() {
        return false;
    }

    /**
     * {@inheritDoc}
     *
     * @see java.util.Iterator#next()
     */
    @Override
    public SmbResource next() {
        return null;
    }

    /**

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.entity;

import java.util.HashSet;
import java.util.Set;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

        // 1.3-compatible.
        final StringBuilder buffer = new StringBuilder();
        final Iterator propertyValues = values.iterator();
        while (propertyValues.hasNext()) {
            buffer.append(propertyValues.next());
            if (propertyValues.hasNext()) {
                buffer.append(", ");
            }
        }
        connection.setRequestProperty(key, buffer.toString());
    }

    @Override

    Iterator<Subscriber> empty = registry.getSubscribers("");
    assertFalse(empty.hasNext());

    empty = registry.getSubscribers("");

    registry.register(s1);
    assertFalse(empty.hasNext());

    Iterator<Subscriber> one = registry.getSubscribers("");
    assertEquals(s1, one.next().target);
    assertFalse(one.hasNext());

    one = registry.getSubscribers("");

    registry.register(s2);

        // hasNext/next sequence over two elements
        assertTrue(it.hasNext(), "Expected first element available");
        SmbResource r1 = it.next();
        assertNotNull(r1);
        assertEquals("foo/", r1.getName(), "First child name should match with trailing slash");

        assertTrue(it.hasNext(), "Expected second element available");
        SmbResource r2 = it.next();

import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import junit.framework.TestCase;
import junit.textui.ResultPrinter;
import junit.textui.TestRunner;

import org.codelibs.core.io.TraversalUtil.FileSystemTraverser;

        // Act & Assert: entries a, b, c (dot entries filtered) then end
        assertTrue(it.hasNext());
        assertEquals("a", it.next().getName());
        assertTrue(it.hasNext());
        assertEquals("b", it.next().getName());
        assertTrue(it.hasNext());
        assertEquals("c", it.next().getName());
        assertFalse(it.hasNext());

        // Verify interactions

    assertEquals("[" + JOINER.join(map.keySet()) + "]", map.keySet().toString());
    assertEquals("[" + JOINER.join(map.values()) + "]", map.values().toString());

    assertEquals(new HashSet<>(map.entrySet()), map.entrySet());
    assertEquals(new HashSet<>(map.keySet()), map.keySet());
  }

  public @Nullable Entry<E> firstEntry() {
    Iterator<Entry<E>> entryIterator = entryIterator();
    return entryIterator.hasNext() ? entryIterator.next() : null;
  }

  @Override
  public @Nullable Entry<E> lastEntry() {
    Iterator<Entry<E>> entryIterator = descendingEntryIterator();
    return entryIterator.hasNext() ? entryIterator.next() : null;
  }

  @Override
  public @Nullable Entry<E> pollFirstEntry() {

import com.google.common.collect.testing.testers.CollectionSerializationEqualTester;
import com.google.common.testing.SerializableTester;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import junit.framework.TestSuite;

/**