* specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl;

import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

class Utils {
    static <T> T nonNull(T t) {
        if (t == null) {
            throw new IllegalArgumentException();
        }
        return t;
    }

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl;

import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

class Utils {
    static <T> T nonNull(T t) {
        if (t == null) {
            throw new IllegalArgumentException();
        }
        return t;
    }

import javax.inject.Named;
import javax.inject.Singleton;

import java.io.IOException;
import java.nio.file.Path;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;

import org.apache.maven.api.*;
import org.apache.maven.api.Artifact;
import org.apache.maven.api.ArtifactCoordinate;

import javax.inject.Inject;

import java.nio.file.Path;

import org.apache.maven.api.LocalRepository;
import org.apache.maven.api.annotations.Nonnull;

import static org.apache.maven.internal.impl.Utils.nonNull;

public class DefaultLocalRepository implements LocalRepository {

    private final @Nonnull org.eclipse.aether.repository.LocalRepository repository;

    @Inject

import org.eclipse.aether.installation.InstallRequest;
import org.eclipse.aether.installation.InstallResult;
import org.eclipse.aether.installation.InstallationException;

import static org.apache.maven.internal.impl.Utils.nonNull;

@Named
@Singleton
public class DefaultArtifactInstaller implements ArtifactInstaller {

    private final RepositorySystem repositorySystem;

    @Inject

 * under the License.
 */
package org.apache.maven.internal.impl;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.List;
import java.util.Optional;

import org.apache.maven.api.Repository;
import org.apache.maven.api.Version;
import org.apache.maven.api.services.VersionResolver;
import org.apache.maven.api.services.VersionResolverException;

 * under the License.
 */
package org.apache.maven.internal.impl;

import java.util.Collection;

import org.apache.maven.api.*;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;
import org.eclipse.aether.artifact.ArtifactProperties;

import static org.apache.maven.internal.impl.Utils.nonNull;

public class DefaultDependencyCoordinate implements DependencyCoordinate {

import org.apache.maven.api.services.ArtifactFactory;
import org.apache.maven.api.services.ArtifactFactoryRequest;
import org.eclipse.aether.artifact.ArtifactType;

import static org.apache.maven.internal.impl.Utils.nonNull;

@Named
@Singleton
public class DefaultArtifactFactory implements ArtifactFactory {
    @Override
    public Artifact create(@Nonnull ArtifactFactoryRequest request) {
        nonNull(request, "request");

import org.apache.maven.api.services.ArtifactCoordinateFactory;
import org.apache.maven.api.services.ArtifactCoordinateFactoryRequest;
import org.eclipse.aether.artifact.ArtifactType;

import static org.apache.maven.internal.impl.Utils.nonNull;

@Named
@Singleton
public class DefaultArtifactCoordinateFactory implements ArtifactCoordinateFactory {
    @Override
    public ArtifactCoordinate create(@Nonnull ArtifactCoordinateFactoryRequest request) {

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.apache.maven.toolchain.DefaultToolchain;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.apache.maven.utils.Os;
import org.slf4j.Logger;

/**
 * JDK toolchain implementation.
 *
 * @since 2.0.9, renamed from DefaultJavaToolChain in 3.2.4
 */