import java.util.Iterator;
import java.util.List;

public class DefaultDomainObjectCollection<T> extends AbstractCollection<T> implements DomainObjectCollection<T>, WithEstimatedSize, WithMutationGuard {

    private final Class<? extends T> type;
    private final CollectionEventRegister<T> eventRegister;
    private final ElementSource<T> store;

import static org.gradle.util.internal.WrapUtil.toList

class DefaultDomainObjectCollectionTest extends AbstractDomainObjectCollectionSpec<CharSequence> {
    DefaultDomainObjectCollection<CharSequence> container = new DefaultDomainObjectCollection<CharSequence>(CharSequence.class, new IterationOrderRetainingSetElementSource<CharSequence>(), callbackActionDecorator)
    StringBuffer a = new StringBuffer("a")

import org.gradle.api.specs.Specs;
import org.gradle.internal.ImmutableActionSet;

import java.util.LinkedHashSet;
import java.util.Set;

public class DefaultDomainObjectSet<T> extends DefaultDomainObjectCollection<T> implements DomainObjectSet<T> {
    // TODO: Combine these with MutationGuard
    private ImmutableActionSet<Void> beforeContainerChange = ImmutableActionSet.empty();

import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;

public class DefaultNamedDomainObjectCollection<T> extends DefaultDomainObjectCollection<T> implements NamedDomainObjectCollection<T>, MethodMixIn, PropertyMixIn {

    private final Instantiator instantiator;
    private final Namer<? super T> namer;
    protected final Index<T> index;