if (oldEntryForValue != null) {
      if (force) {
        delete(oldEntryForValue);
      } else {
        throw new IllegalArgumentException("value already present: " + value);
      }
    }

    BiEntry<K, V> newEntry = new BiEntry<>(key, keyHash, value, valueHash);
    if (oldEntryForKey != null) {
      delete(oldEntryForKey);
      insert(newEntry, oldEntryForKey);

//
// Usage:
//
//	go run ../../mkzip.go ../../zoneinfo.zip
//
// We use this program instead of 'zip -0 -r ../../zoneinfo.zip *' to get
// a reproducible generator that does not depend on which version of the
// external zip tool is used or the ordering of file names in a directory
// or the current time.
package main

import (
	"archive/zip"
	"bytes"
	"flag"
	"fmt"
	"hash/crc32"

     * @return the owner group SID, <code>null</code> if not present
     * @throws IOException
     */
    SID getOwnerGroup () throws IOException;


    /**
     * Return the owner group SID for this file or directory
     * 
     * @param resolve
     *            whether to resolve the group name
     * @return the owner group SID, <code>null</code> if not present
     * @throws IOException
     */

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testRemove_present() {
    getSet().remove(e0());
    assertFalse(
        "After remove(present) a set should not contain the removed element.",
        getSet().contains(e0()));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testRemove_present() {
    getSet().remove(e0());
    assertFalse(
        "After remove(present) a set should not contain the removed element.",
        getSet().contains(e0()));
  }

    init {
      isAvailable =
        if (majorVersion != null) {
          majorVersion >= 9
        } else {
          try {
            // also present on JDK8 after build 252.
            SSLSocket::class.java.getMethod("getApplicationProtocol")
            true
          } catch (nsme: NoSuchMethodException) {
            false
          }
        }
    }

 * java.lang.reflect.AccessibleObject AccessibleObject} and {@link
 * java.lang.reflect.GenericDeclaration GenericDeclaration}. Since version 31.0 that is no longer
 * the case. However, most methods from those types are present with the same signature in this
 * class.
 *
 * @param <T> the type that owns this method or constructor.
 * @param <R> the return type of (or supertype thereof) the method or the declaring type of the
 *     constructor.

      private var nextUrl: String? = null
      private var canRemove = false

      override fun hasNext(): Boolean {
        if (nextUrl != null) return true

        canRemove = false // Prevent delegate.remove() on the wrong item!
        while (delegate.hasNext()) {
          try {
            delegate.next().use { snapshot ->
              val metadata = snapshot.getSource(ENTRY_METADATA).buffer()

import javax.annotation.CheckForNull;

/**
 * ImmutableSet implementation backed by a JDK HashSet, used to defend against apparent hash
 * flooding. This implementation is never used on the GWT client side, but it must be present there
 * for serialization to work.
 *
 * @author Louis Wasserman
 */
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
final class JdkBackedImmutableSet<E> extends IndexedImmutableSet<E> {

 * under the License.
 */
package org.apache.maven.repository;

import java.util.ArrayList;
import java.util.Collection;

/**
 * This is the main graph data structure used by the RepositorySystem to present tree and graph objects.
 *
 *
 */
@Deprecated
public class MetadataGraph {
    /** all graph nodes */
    Collection<MetadataGraphNode> nodes;

    /** entry point for tree-like structures */