* constructed multimap. The new multimap has the same {@link Multimap#entries()} iteration order
   * as the input multimap, except for excluding duplicate mappings.
   *
   * @param multimap the multimap whose contents are copied to this multimap
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMultimap<K, V> create(Multimap<? extends K, ? extends V> multimap) {

   * constructed multimap. The new multimap has the same {@link Multimap#entries()} iteration order
   * as the input multimap, except for excluding duplicate mappings.
   *
   * @param multimap the multimap whose contents are copied to this multimap
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      LinkedHashMultimap<K, V> create(Multimap<? extends K, ? extends V> multimap) {

import java.util.Set;
import java.util.Spliterator;
import java.util.function.BiConsumer;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A {@link Multimap} whose contents will never change, with many other important properties
 * detailed at {@link ImmutableCollection}.
 *
 * <p><b>Warning:</b> avoid <i>direct</i> usage of {@link ImmutableMultimap} as a type (as with

    /**
     * Allows lazy access to the contents of the given file.
     *
     * When the file contents are read at configuration time the file is automatically considered
     * as an input to the configuration model.
     *
     * @param file the file whose contents to read.
     * @return an interface that allows lazy access to the contents of the given file.
     *
     * @see FileContents#getAsText()

     * The returned list of versions is only dependent on the configured repositories and their contents.
     * The supplied request may also refer to a single concrete version rather than a version range.
     * In this case though, the result contains simply the (parsed) input version, regardless of the
     * repositories and their contents.
     *
     * @param session the session to use
     * @param artifactCoordinate t

   * Collections2#transform} or {@link Iterables#transform}.
   *
   * <p><b>Note:</b> serializing the returned list is implemented by serializing {@code fromList},
   * its contents, and {@code function} -- <i>not</i> by serializing the transformed values. This
   * can lead to surprising behavior, so serializing the returned list is <b>not recommended</b>.

 */
package org.codelibs.fess.suggest.index.contents;

import java.io.IOException;
import java.util.List;

import org.codelibs.fess.suggest.converter.KatakanaToAlphabetConverter;
import org.codelibs.fess.suggest.converter.ReadingConverter;
import org.codelibs.fess.suggest.converter.ReadingConverterChain;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;

import org.gradle.api.Transformer;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

/**
 * <p>A mapping provider that uses a transform that:</p>
 *
 * <ul>
 *     <li>1. does not use the value contents</li>
 *     <li>2. always produces a non-null value.</li>
 * </ul>
 *
 * <p>This implementation is used only for internal transforms where these constraints are known to be true.

   *
   * <p>A collection is considered immutable if:
   *
   * <ol>
   *   <li>All its mutation methods result in UnsupportedOperationException, and do not change the
   *       underlying contents.
   *   <li>All methods that return objects that can indirectly mutate the collection throw
   *       UnsupportedOperationException when those mutators are called.
   * </ol>
   *

   * ImmutableSortedSet) creates an empty sortedDelegate, which, in a vacuum, sets this object's
   * contents to empty. By contrast, the non-GWT constructor with the same signature uses the
   * comparator only as a comparator. It does NOT assume empty contents. (It requires an
   * implementation of iterator() to define its contents, and methods like contains() are