/*
 * Copyright (c) 2020 Goldman Sachs and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.impl.map.immutable.primitive;

import java.io.IOException;
import java.io.Serializable;
import java.util.Collection;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Optional;

import org.eclipse.collections.api.BooleanIterable;
import org.eclipse.collections.api.ByteIterable;
import org.eclipse.collections.api.CharIterable;
import org.eclipse.collections.api.DoubleIterable;
import org.eclipse.collections.api.FloatIterable;
import org.eclipse.collections.api.IntIterable;
import org.eclipse.collections.api.LongIterable;
import org.eclipse.collections.api.ShortIterable;
import org.eclipse.collections.api.LazyDoubleIterable;
import org.eclipse.collections.api.LazyIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.bag.ImmutableBag;
import org.eclipse.collections.api.bag.MutableBag;
import org.eclipse.collections.api.bag.primitive.ImmutableBooleanBag;
import org.eclipse.collections.api.bag.primitive.ImmutableByteBag;
import org.eclipse.collections.api.bag.primitive.ImmutableCharBag;
import org.eclipse.collections.api.bag.primitive.ImmutableDoubleBag;
import org.eclipse.collections.api.bag.primitive.ImmutableFloatBag;
import org.eclipse.collections.api.bag.primitive.ImmutableIntBag;
import org.eclipse.collections.api.bag.primitive.ImmutableLongBag;
import org.eclipse.collections.api.bag.primitive.ImmutableShortBag;
import org.eclipse.collections.api.bag.sorted.MutableSortedBag;
import org.eclipse.collections.api.bimap.MutableBiMap;
import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.function.Function0;
import org.eclipse.collections.api.block.function.Function2;
import org.eclipse.collections.api.block.function.primitive.BooleanFunction;
import org.eclipse.collections.api.block.function.primitive.ByteFunction;
import org.eclipse.collections.api.block.function.primitive.CharFunction;
import org.eclipse.collections.api.block.function.primitive.DoubleFunction;
import org.eclipse.collections.api.block.function.primitive.DoubleObjectToDoubleFunction;
import org.eclipse.collections.api.block.function.primitive.FloatFunction;
import org.eclipse.collections.api.block.function.primitive.FloatObjectToFloatFunction;
import org.eclipse.collections.api.block.function.primitive.IntFunction;
import org.eclipse.collections.api.block.function.primitive.IntObjectToIntFunction;
import org.eclipse.collections.api.block.function.primitive.LongFunction;
import org.eclipse.collections.api.block.function.primitive.LongObjectToLongFunction;
import org.eclipse.collections.api.block.function.primitive.ShortFunction;
import org.eclipse.collections.api.block.predicate.Predicate;
import org.eclipse.collections.api.block.predicate.Predicate2;
import org.eclipse.collections.api.block.predicate.primitive.DoubleObjectPredicate;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.block.procedure.Procedure2;
import org.eclipse.collections.api.block.procedure.primitive.DoubleObjectProcedure;
import org.eclipse.collections.api.block.procedure.primitive.DoubleProcedure;
import org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure;
import org.eclipse.collections.api.collection.primitive.MutableBooleanCollection;
import org.eclipse.collections.api.collection.primitive.MutableByteCollection;
import org.eclipse.collections.api.collection.primitive.MutableCharCollection;
import org.eclipse.collections.api.collection.primitive.MutableDoubleCollection;
import org.eclipse.collections.api.collection.primitive.MutableFloatCollection;
import org.eclipse.collections.api.collection.primitive.MutableIntCollection;
import org.eclipse.collections.api.collection.primitive.MutableLongCollection;
import org.eclipse.collections.api.collection.primitive.MutableShortCollection;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.map.ImmutableMap;
import org.eclipse.collections.api.map.MutableMap;
import org.eclipse.collections.api.map.MutableMapIterable;
import org.eclipse.collections.api.map.primitive.DoubleObjectMap;
import org.eclipse.collections.api.map.primitive.ImmutableDoubleObjectMap;
import org.eclipse.collections.api.map.primitive.ImmutableObjectDoubleMap;
import org.eclipse.collections.api.map.primitive.ImmutableObjectLongMap;
import org.eclipse.collections.api.map.sorted.MutableSortedMap;
import org.eclipse.collections.api.multimap.MutableMultimap;
import org.eclipse.collections.api.multimap.bag.ImmutableBagMultimap;
import org.eclipse.collections.api.partition.bag.PartitionImmutableBag;
import org.eclipse.collections.api.set.ImmutableSet;
import org.eclipse.collections.api.set.MutableSet;
import org.eclipse.collections.api.set.primitive.MutableDoubleSet;
import org.eclipse.collections.api.set.sorted.MutableSortedSet;
import org.eclipse.collections.api.tuple.Pair;
import org.eclipse.collections.api.tuple.primitive.DoubleObjectPair;
import org.eclipse.collections.impl.bag.sorted.mutable.TreeBag;
import org.eclipse.collections.impl.block.factory.Comparators;
import org.eclipse.collections.impl.factory.Bags;
import org.eclipse.collections.impl.factory.BiMaps;
import org.eclipse.collections.impl.factory.Lists;
import org.eclipse.collections.impl.factory.Maps;
import org.eclipse.collections.impl.factory.Multimaps;
import org.eclipse.collections.impl.factory.Sets;
import org.eclipse.collections.impl.factory.SortedMaps;
import org.eclipse.collections.impl.factory.SortedSets;
import org.eclipse.collections.impl.factory.primitive.BooleanBags;
import org.eclipse.collections.impl.factory.primitive.ByteBags;
import org.eclipse.collections.impl.factory.primitive.CharBags;
import org.eclipse.collections.impl.factory.primitive.DoubleBags;
import org.eclipse.collections.impl.factory.primitive.FloatBags;
import org.eclipse.collections.impl.factory.primitive.IntBags;
import org.eclipse.collections.impl.factory.primitive.LongBags;
import org.eclipse.collections.impl.factory.primitive.ShortBags;
import org.eclipse.collections.impl.factory.primitive.ObjectDoubleMaps;
import org.eclipse.collections.impl.factory.primitive.ObjectLongMaps;
import org.eclipse.collections.impl.lazy.LazyIterableAdapter;
import org.eclipse.collections.impl.list.mutable.FastList;
import org.eclipse.collections.impl.map.mutable.primitive.DoubleObjectHashMap;
import org.eclipse.collections.impl.partition.bag.PartitionHashBag;
import org.eclipse.collections.impl.set.mutable.primitive.DoubleHashSet;
import org.eclipse.collections.impl.set.mutable.primitive.UnmodifiableDoubleSet;
import org.eclipse.collections.impl.utility.LazyIterate;
import org.eclipse.collections.impl.utility.primitive.LazyDoubleIterate;

ImmutableDoubleObjectEmptyMap is an optimization for ImmutableDoubleObjectMap of size 0. This file was automatically generated from template file immutablePrimitiveObjectEmptyMap.stg.
Since:4.0.
/** * ImmutableDoubleObjectEmptyMap is an optimization for {@link ImmutableDoubleObjectMap} of size 0. * This file was automatically generated from template file immutablePrimitiveObjectEmptyMap.stg. * * @since 4.0. */
final class ImmutableDoubleObjectEmptyMap<V> implements ImmutableDoubleObjectMap<V>, Serializable { static final ImmutableDoubleObjectMap<?> INSTANCE = new ImmutableDoubleObjectEmptyMap<>(); private static final long serialVersionUID = 1L; private Object readResolve() { return INSTANCE; } @Override public V get(double key) { return null; } @Override public V getIfAbsent(double key, Function0<? extends V> ifAbsent) { return ifAbsent.value(); } @Override public boolean containsKey(double key) { return false; } @Override public boolean containsValue(Object value) { return false; } @Override public ImmutableDoubleObjectMap<V> tap(Procedure<? super V> procedure) { return this; } @Override public void forEachValue(Procedure<? super V> procedure) { } @Override public void forEachKey(DoubleProcedure procedure) { } @Override public void forEachKeyValue(DoubleObjectProcedure<? super V> procedure) { } @Override public ImmutableDoubleObjectMap<V> select(DoubleObjectPredicate<? super V> predicate) { return this; } @Override public ImmutableDoubleObjectMap<V> reject(DoubleObjectPredicate<? super V> predicate) { return this; } @Override public ImmutableDoubleObjectMap<V> toImmutable() { return this; } @Override public int size() { return 0; } @Override public boolean isEmpty() { return true; } @Override public boolean notEmpty() { return false; } @Override public V getFirst() { return null; } @Override public V getLast() { return null; } @Override public V getOnly() { throw new IllegalStateException("Size must be 1 but was " + this.size()); } @Override public boolean contains(Object object) { return false; } @Override public boolean containsAllIterable(Iterable<?> source) { return !source.iterator().hasNext(); } @Override public boolean containsAll(Collection<?> source) { return source.isEmpty(); } @Override public boolean containsAllArguments(Object... elements) { return elements.length == 0; } @Override public ImmutableBag<V> select(Predicate<? super V> predicate) { return Bags.immutable.empty(); } @Override public <P> ImmutableBag<V> selectWith(Predicate2<? super V, ? super P> predicate, P parameter) { return Bags.immutable.empty(); } @Override public ImmutableBag<V> reject(Predicate<? super V> predicate) { return Bags.immutable.empty(); } @Override public <P> ImmutableBag<V> rejectWith(Predicate2<? super V, ? super P> predicate, P parameter) { return Bags.immutable.empty(); } @Override public <R extends Collection<V>> R select(Predicate<? super V> predicate, R target) { return target; } @Override public <P, R extends Collection<V>> R selectWith(Predicate2<? super V, ? super P> predicate, P parameter, R target) { return target; } @Override public <R extends Collection<V>> R reject(Predicate<? super V> predicate, R target) { return target; } @Override public <P, R extends Collection<V>> R rejectWith(Predicate2<? super V, ? super P> predicate, P parameter, R target) { return target; } @Override public PartitionImmutableBag<V> partition(Predicate<? super V> predicate) { return new PartitionHashBag<V>().toImmutable(); } @Override public <P> PartitionImmutableBag<V> partitionWith(Predicate2<? super V, ? super P> predicate, P parameter) { return new PartitionHashBag<V>().toImmutable(); } @Override public <S> ImmutableBag<S> selectInstancesOf(Class<S> clazz) { return Bags.immutable.empty(); } @Override public <VV> ImmutableBag<VV> collect(Function<? super V, ? extends VV> function) { return Bags.immutable.empty(); } @Override public <P, VV> ImmutableBag<VV> collectWith(Function2<? super V, ? super P, ? extends VV> function, P parameter) { return Bags.immutable.empty(); } @Override public <VV> ImmutableBag<VV> collectIf(Predicate<? super V> predicate, Function<? super V, ? extends VV> function) { return Bags.immutable.empty(); } @Override public ImmutableBooleanBag collectBoolean(BooleanFunction<? super V> booleanFunction) { return BooleanBags.immutable.empty(); } @Override public <R extends MutableBooleanCollection> R collectBoolean(BooleanFunction<? super V> booleanFunction, R target) { return target; } @Override public ImmutableByteBag collectByte(ByteFunction<? super V> byteFunction) { return ByteBags.immutable.empty(); } @Override public <R extends MutableByteCollection> R collectByte(ByteFunction<? super V> byteFunction, R target) { return target; } @Override public ImmutableCharBag collectChar(CharFunction<? super V> charFunction) { return CharBags.immutable.empty(); } @Override public <R extends MutableCharCollection> R collectChar(CharFunction<? super V> charFunction, R target) { return target; } @Override public ImmutableDoubleBag collectDouble(DoubleFunction<? super V> doubleFunction) { return DoubleBags.immutable.empty(); } @Override public <R extends MutableDoubleCollection> R collectDouble(DoubleFunction<? super V> doubleFunction, R target) { return target; } @Override public ImmutableFloatBag collectFloat(FloatFunction<? super V> floatFunction) { return FloatBags.immutable.empty(); } @Override public <R extends MutableFloatCollection> R collectFloat(FloatFunction<? super V> floatFunction, R target) { return target; } @Override public ImmutableIntBag collectInt(IntFunction<? super V> intFunction) { return IntBags.immutable.empty(); } @Override public <R extends MutableIntCollection> R collectInt(IntFunction<? super V> intFunction, R target) { return target; } @Override public ImmutableLongBag collectLong(LongFunction<? super V> longFunction) { return LongBags.immutable.empty(); } @Override public <R extends MutableLongCollection> R collectLong(LongFunction<? super V> longFunction, R target) { return target; } @Override public ImmutableShortBag collectShort(ShortFunction<? super V> shortFunction) { return ShortBags.immutable.empty(); } @Override public <R extends MutableShortCollection> R collectShort(ShortFunction<? super V> shortFunction, R target) { return target; } @Override public <VV> ImmutableBag<VV> flatCollect(Function<? super V, ? extends Iterable<VV>> function) { return Bags.immutable.empty(); } @Override public <R extends MutableByteCollection> R flatCollectByte( Function<? super V, ? extends ByteIterable> function, R target) { return target; } @Override public <R extends MutableCharCollection> R flatCollectChar( Function<? super V, ? extends CharIterable> function, R target) { return target; } @Override public <R extends MutableIntCollection> R flatCollectInt( Function<? super V, ? extends IntIterable> function, R target) { return target; } @Override public <R extends MutableShortCollection> R flatCollectShort( Function<? super V, ? extends ShortIterable> function, R target) { return target; } @Override public <R extends MutableDoubleCollection> R flatCollectDouble( Function<? super V, ? extends DoubleIterable> function, R target) { return target; } @Override public <R extends MutableFloatCollection> R flatCollectFloat( Function<? super V, ? extends FloatIterable> function, R target) { return target; } @Override public <R extends MutableLongCollection> R flatCollectLong( Function<? super V, ? extends LongIterable> function, R target) { return target; } @Override public <R extends MutableBooleanCollection> R flatCollectBoolean( Function<? super V, ? extends BooleanIterable> function, R target) { return target; } @Override public V detect(Predicate<? super V> predicate) { return null; } @Override public <P> V detectWith(Predicate2<? super V, ? super P> predicate, P parameter) { return null; } @Override public Optional<V> detectOptional(Predicate<? super V> predicate) { return Optional.empty(); } @Override public <P> Optional<V> detectWithOptional(Predicate2<? super V, ? super P> predicate, P parameter) { return Optional.empty(); } @Override public V detectIfNone(Predicate<? super V> predicate, Function0<? extends V> function) { return function.value(); } @Override public <P> V detectWithIfNone(Predicate2<? super V, ? super P> predicate, P parameter, Function0<? extends V> function) { return function.value(); } @Override public int count(Predicate<? super V> predicate) { return 0; } @Override public <P> int countWith(Predicate2<? super V, ? super P> predicate, P parameter) { return 0; } @Override public boolean anySatisfy(Predicate<? super V> predicate) { return false; } @Override public <P> boolean anySatisfyWith(Predicate2<? super V, ? super P> predicate, P parameter) { return false; } @Override public boolean allSatisfy(Predicate<? super V> predicate) { return true; } @Override public <P> boolean allSatisfyWith(Predicate2<? super V, ? super P> predicate, P parameter) { return true; } @Override public boolean noneSatisfy(Predicate<? super V> predicate) { return true; } @Override public <P> boolean noneSatisfyWith(Predicate2<? super V, ? super P> predicate, P parameter) { return true; } @Override public <IV> IV injectInto(IV injectedValue, Function2<? super IV, ? super V, ? extends IV> function) { return injectedValue; } @Override public int injectInto(int injectedValue, IntObjectToIntFunction<? super V> function) { return injectedValue; } @Override public long injectInto(long injectedValue, LongObjectToLongFunction<? super V> function) { return injectedValue; } @Override public float injectInto(float injectedValue, FloatObjectToFloatFunction<? super V> function) { return injectedValue; } @Override public double injectInto(double injectedValue, DoubleObjectToDoubleFunction<? super V> function) { return injectedValue; } @Override public <R extends Collection<V>> R into(R target) { return target; } @Override public MutableList<V> toList() { return Lists.mutable.with(); } @Override public MutableList<V> toSortedList() { return Lists.mutable.with(); } @Override public MutableList<V> toSortedList(Comparator<? super V> comparator) { return Lists.mutable.with(); } @Override public MutableSet<V> toSet() { return Sets.mutable.with(); } @Override public MutableSortedSet<V> toSortedSet() { return SortedSets.mutable.with(); } @Override public MutableSortedSet<V> toSortedSet(Comparator<? super V> comparator) { return SortedSets.mutable.with(); } @Override public MutableBag<V> toBag() { return Bags.mutable.with(); } @Override public MutableSortedBag<V> toSortedBag() { return TreeBag.newBag(); } @Override public MutableSortedBag<V> toSortedBag(Comparator<? super V> comparator) { return TreeBag.newBag(comparator); } @Override public <VV extends Comparable<? super VV>> MutableSortedBag<V> toSortedBagBy(Function<? super V, ? extends VV> function) { return TreeBag.newBag(Comparators.byFunction(function)); } @Override public <NK, NV> MutableMap<NK, NV> toMap(Function<? super V, ? extends NK> keyFunction, Function<? super V, ? extends NV> valueFunction) { return Maps.mutable.with(); } @Override public <NK, NV, R extends Map<NK, NV>> R toMap(Function<? super V, ? extends NK> keyFunction, Function<? super V, ? extends NV> valueFunction, R target) { return target; } @Override public <NK, NV> MutableSortedMap<NK, NV> toSortedMap(Function<? super V, ? extends NK> keyFunction, Function<? super V, ? extends NV> valueFunction) { return SortedMaps.mutable.with(); } @Override public <NK, NV> MutableSortedMap<NK, NV> toSortedMap(Comparator<? super NK> comparator, Function<? super V, ? extends NK> keyFunction, Function<? super V, ? extends NV> valueFunction) { return SortedMaps.mutable.with(); } @Override public <KK extends Comparable<? super KK>, NK, NV> MutableSortedMap<NK, NV> toSortedMapBy(Function<? super NK, KK> sortBy, Function<? super V, ? extends NK> keyFunction, Function<? super V, ? extends NV> valueFunction) { return SortedMaps.mutable.with(); } @Override public <NK, NV> MutableBiMap<NK, NV> toBiMap(Function<? super V, ? extends NK> keyFunction, Function<? super V, ? extends NV> valueFunction) { return BiMaps.mutable.empty(); } @Override public LazyIterable<V> asLazy() { return new LazyIterableAdapter<>(FastList.<V>newListWith()); } @Override public Object[] toArray() { return new Object[0]; } @Override public <T> T[] toArray(T[] a) { return (T[]) new Object[0]; } @Override public V min(Comparator<? super V> comparator) { throw new NoSuchElementException(); } @Override public V max(Comparator<? super V> comparator) { throw new NoSuchElementException(); } @Override public V min() { throw new NoSuchElementException(); } @Override public V max() { throw new NoSuchElementException(); } @Override public long sumOfInt(IntFunction<? super V> function) { return 0L; } @Override public double sumOfFloat(FloatFunction<? super V> function) { return 0.0; } @Override public long sumOfLong(LongFunction<? super V> function) { return 0L; } @Override public double sumOfDouble(DoubleFunction<? super V> function) { return 0.0; } @Override public <V1> ImmutableObjectLongMap<V1> sumByInt(Function<? super V, ? extends V1> groupBy, IntFunction<? super V> function) { return ObjectLongMaps.immutable.empty(); } @Override public <V1> ImmutableObjectDoubleMap<V1> sumByFloat(Function<? super V, ? extends V1> groupBy, FloatFunction<? super V> function) { return ObjectDoubleMaps.immutable.empty(); } @Override public <V1> ImmutableObjectLongMap<V1> sumByLong(Function<? super V, ? extends V1> groupBy, LongFunction<? super V> function) { return ObjectLongMaps.immutable.empty(); } @Override public <V1> ImmutableObjectDoubleMap<V1> sumByDouble(Function<? super V, ? extends V1> groupBy, DoubleFunction<? super V> function) { return ObjectDoubleMaps.immutable.empty(); } @Override public MutableDoubleSet keySet() { return UnmodifiableDoubleSet.of(DoubleHashSet.newSetWith()); } @Override public Collection<V> values() { return Lists.immutable.<V>of().castToList(); } @Override public LazyDoubleIterable keysView() { return LazyDoubleIterate.empty(); } @Override public RichIterable<DoubleObjectPair<V>> keyValuesView() { return LazyIterate.empty(); } @Override public ImmutableObjectDoubleMap<V> flipUniqueValues() { return ObjectDoubleMaps.immutable.empty(); } @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof DoubleObjectMap)) { return false; } DoubleObjectMap<V> map = (DoubleObjectMap<V>) obj; return map.isEmpty(); } @Override public int hashCode() { return 0; } @Override public String toString() { return "{}"; } @Override public String makeString() { return ""; } @Override public String makeString(String separator) { return ""; } @Override public String makeString(String start, String separator, String end) { return start + end; } @Override public void appendString(Appendable appendable) { } @Override public void appendString(Appendable appendable, String separator) { } @Override public void appendString(Appendable appendable, String start, String separator, String end) { try { appendable.append(start); appendable.append(end); } catch (IOException e) { throw new RuntimeException(e); } } @Override public <VV> ImmutableBagMultimap<VV, V> groupBy(Function<? super V, ? extends VV> function) { return Multimaps.immutable.bag.empty(); } @Override public <VV, R extends MutableMultimap<VV, V>> R groupBy(Function<? super V, ? extends VV> function, R target) { return target; } @Override public <VV> ImmutableBagMultimap<VV, V> groupByEach(Function<? super V, ? extends Iterable<VV>> function) { return Multimaps.immutable.bag.empty(); } @Override public <VV, R extends MutableMultimap<VV, V>> R groupByEach(Function<? super V, ? extends Iterable<VV>> function, R target) { return target; } @Override public <VV> ImmutableMap<VV, V> groupByUniqueKey(Function<? super V, ? extends VV> function) { return Maps.immutable.empty(); } @Override public <VV, R extends MutableMapIterable<VV, V>> R groupByUniqueKey(Function<? super V, ? extends VV> function, R target) { return target; } @Override public <S> ImmutableBag<Pair<V, S>> zip(Iterable<S> that) { return Bags.immutable.empty(); } @Override public <S, R extends Collection<Pair<V, S>>> R zip(Iterable<S> that, R target) { return target; } @Override public ImmutableSet<Pair<V, Integer>> zipWithIndex() { return Sets.immutable.empty(); } @Override public <R extends Collection<Pair<V, Integer>>> R zipWithIndex(R target) { return target; } @Override public RichIterable<RichIterable<V>> chunk(int size) { return Lists.immutable.of(); } @Override public <K, VV> ImmutableMap<K, VV> aggregateInPlaceBy(Function<? super V, ? extends K> groupBy, Function0<? extends VV> zeroValueFactory, Procedure2<? super VV, ? super V> mutatingAggregator) { return Maps.immutable.empty(); } @Override public <VV extends Comparable<? super VV>> V maxBy(Function<? super V, ? extends VV> function) { throw new NoSuchElementException(); } @Override public <VV extends Comparable<? super VV>> V minBy(Function<? super V, ? extends VV> function) { throw new NoSuchElementException(); } @Override public <VV extends Comparable<? super VV>> MutableSortedSet<V> toSortedSetBy(Function<? super V, ? extends VV> function) { return SortedSets.mutable.of(); } @Override public <VV extends Comparable<? super VV>> MutableList<V> toSortedListBy(Function<? super V, ? extends VV> function) { return Lists.mutable.of(); } @Override public <VV, R extends Collection<VV>> R flatCollect(Function<? super V, ? extends Iterable<VV>> function, R target) { return target; } @Override public <VV, R extends Collection<VV>> R collectIf(Predicate<? super V> predicate, Function<? super V, ? extends VV> function, R target) { return target; } @Override public <K, VV> ImmutableMap<K, VV> aggregateBy(Function<? super V, ? extends K> groupBy, Function0<? extends VV> zeroValueFactory, Function2<? super VV, ? super V, ? extends VV> nonMutatingAggregator) { return Maps.immutable.empty(); } @Override public <P, VV, R extends Collection<VV>> R collectWith(Function2<? super V, ? super P, ? extends VV> function, P parameter, R targetCollection) { return targetCollection; } @Override public <VV, R extends Collection<VV>> R collect(Function<? super V, ? extends VV> function, R target) { return target; } @Override public ImmutableDoubleObjectMap<V> newWithKeyValue(double key, V value) { DoubleObjectHashMap<V> map = new DoubleObjectHashMap<>(); map.put(key, value); return map.toImmutable(); } @Override public ImmutableDoubleObjectMap<V> newWithoutKey(double key) { return this; } @Override public ImmutableDoubleObjectMap<V> newWithoutAllKeys(DoubleIterable keys) { return this; } @Override public void forEach(Procedure<? super V> procedure) { } @Override public void each(Procedure<? super V> procedure) { } @Override public void forEachWithIndex(ObjectIntProcedure<? super V> objectIntProcedure) { } @Override public <P> void forEachWith(Procedure2<? super V, ? super P> procedure, P parameter) { } @Override public Iterator<V> iterator() { return new InternalIterator(); } private class InternalIterator implements Iterator<V> { @Override public boolean hasNext() { return false; } @Override public V next() { throw new NoSuchElementException(); } @Override public void remove() { throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName()); } } }