final String k = "q";
        assertEquals("", getAsQuery(Collections.singletonMap(k, new String[] { "" })));
        assertEquals("aaa", getAsQuery(Collections.singletonMap(k, new String[] { "aaa" })));
        assertEquals("aaa bbb", getAsQuery(Collections.singletonMap(k, new String[] { "aaa bbb" })));
        assertEquals("aaa bbb ccc", getAsQuery(Collections.singletonMap(k, new String[] { "aaa bbb", "ccc" })));

                    return singletonMap(entry.getKey(), entry.getValue());
                default:
                    return new MapN<>(map);
            }
        }
    }

    @SuppressWarnings("unchecked")
    static <K, V> Map<K, V> emptyMap() {
        return (Map<K, V>) EMPTY_MAP;
    }

    static <K, V> Map<K, V> singletonMap(K key, V value) {
        return new Map1<>(key, value);
    }

 */
public class StandardCrawlerContainer implements CrawlerContainer {

    private static final Logger logger = LogManager.getLogger(StandardCrawlerContainer.class);

    private final Map<String, ComponentHolder<?>> singletonMap = new ConcurrentHashMap<>();

    private final Map<String, ComponentDef<?>> prototypeMap = new ConcurrentHashMap<>();

    private boolean available = true;

    /**

        // Full NTLM handshake testing would require more complex mocking

        // Arrange - Mock a server that supports NTLM
        mockResponse(HTTP_UNAUTHORIZED, "Unauthorized", Collections.singletonMap("WWW-Authenticate", Collections.singletonList("NTLM")),
                new ByteArrayInputStream(new byte[0]));

        // Act - Trigger handshake
        int responseCode = ntlmConnection.getResponseCode();

        NullPointerException.class,
        () -> builder.putAll(Collections.<String, Integer>singletonMap(null, 1)));
  }

  public void testBuilderPutNullValueViaPutAll() {
    Builder<String, Integer> builder = new Builder<>();
    assertThrows(
        NullPointerException.class,
        () -> builder.putAll(Collections.<String, Integer>singletonMap("one", null)));
  }

  @SuppressWarnings("AlwaysThrows")

        () -> builder.putAll(Collections.<String, Integer>singletonMap(null, 1)));
  }

  public void testBuilderPutNullValueViaPutAll() {
    Builder<String, Integer> builder = ImmutableSortedMap.naturalOrder();
    assertThrows(
        NullPointerException.class,
        () -> builder.putAll(Collections.<String, Integer>singletonMap("one", null)));
  }

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Collections.singletonMap;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toMap;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Collections.singletonMap;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toMap;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

 * limitations under the License.
 */

package com.google.common.collect.testing;

import static java.lang.Math.max;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonMap;
import static java.util.Collections.sort;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertFalse;
import static junit.framework.Assert.assertTrue;

        NullPointerException.class,
        () -> builder.putAll(Collections.<String, Integer>singletonMap(null, 1)));
  }

  public void testBuilderPutNullValueViaPutAll() {
    Builder<String, Integer> builder = new Builder<>();
    assertThrows(
        NullPointerException.class,
        () -> builder.putAll(Collections.<String, Integer>singletonMap("one", null)));
  }

  public void testPuttingTheSameKeyTwiceThrowsOnBuild() {