import java.util.Enumeration;
import java.util.Iterator;

import org.codelibs.core.exception.ClUnsupportedOperationException;

/**
 * Adapter to convert an {@link Enumeration} to an {@link Iterator}.
 *
 * @author shot
 * @param <T> the element type
 */
public class EnumerationIterator<T> implements Iterator<T> {

    private Enumeration<T> enumeration = null;

    /**

   *   <li>{@code true} if {@code a} and {@code b} are both non-null and they are equal according to
   *       {@link Object#equals(Object)}.
   *   <li>{@code false} in all other situations.
   * </ul>
   *
   * <p>This assumes that any non-null objects passed to this function conform to the {@code
   * equals()} contract.
   *

        }
        return o;
    }

    /**
     * Converts to the wrapper type corresponding to the specified primitive type.
     *
     * @param type
     *            Primitive type
     * @param o
     *            Source object
     * @return Object converted to the wrapper type corresponding to the specified primitive type
     */

     * and returns a stream of those substrings.
     *
     * @param value the string to be split; if {@code null}, the method returns an empty stream
     * @param regex the regular expression to use for splitting the string
     * @return a stream of substrings resulting from splitting the input string, or an empty stream if the input is {@code null}
     */

      fallback = null;
    }

    setResult(fallbackResult);
  }

  /** Template method for subtypes to actually run the fallback. */
  @ForOverride
  @ParametricNullness
  abstract T doFallback(F fallback, X throwable) throws Exception;

  /** Template method for subtypes to actually set the result. */
  @ForOverride
  abstract void setResult(@ParametricNullness T result);

  @Override

            } else {
                this.messages = new CopyOnWriteArrayList<>(messages);
            }
        }
    }

    /**
     * Adds a message to this session and updates the last accessed timestamp.
     *
     * @param message the message to add
     */
    public void addMessage(final ChatMessage message) {
        synchronized (messagesLock) {
            if (messages == null) {

    assertFailsWith<IllegalArgumentException> {
      mapOf("" to "OkHttp").toHeaders()
    }
  }

  @Test fun ofMapThrowsOnBlankName() {
    assertFailsWith<IllegalArgumentException> {
      mapOf(" " to "OkHttp").toHeaders()
    }
  }

  @Test fun ofMapAcceptsEmptyValue() {
    val headers = mapOf("User-Agent" to "").toHeaders()
    assertThat(headers.value(0)).isEqualTo("")
  }

      this.actionWhenFirstParamIsNull = actionWhenFirstParamIsNull;
      this.actionWhenSecondParamIsNull = actionWhenSecondParamIsNull;
    }

    /** Method that decides how to react to parameters. */
    public void reactToNullParameters(@Nullable Object first, @Nullable Object second) {
      if (first == null) {
        actionWhenFirstParamIsNull.act();
      }
      if (second == null) {

   * {@code Supplier}, whose elements are the result of applying {@code elementFunction} to the
   * inputs, with counts equal to the result of applying {@code countFunction} to the inputs.
   * Elements are added in encounter order.
   *
   * <p>If the mapped elements contain duplicates (according to {@link Object#equals}), the element
   * will be added more than once, with the count summed over all appearances of the element.

   * {@code Supplier}, whose elements are the result of applying {@code elementFunction} to the
   * inputs, with counts equal to the result of applying {@code countFunction} to the inputs.
   * Elements are added in encounter order.
   *
   * <p>If the mapped elements contain duplicates (according to {@link Object#equals}), the element
   * will be added more than once, with the count summed over all appearances of the element.