Collections.addAll(unfiltered, elements);
                unfiltered.add("zzz");
                return Collections2.filter(unfiltered, NOT_YYY_ZZZ);
              }
            })
        .named("Collections2.filter")
        .withFeatures(
            CollectionFeature.SUPPORTS_ADD,
            CollectionFeature.SUPPORTS_REMOVE,
            CollectionFeature.ALLOWS_NULL_VALUES,

                Collections.addAll(unfiltered, elements);
                unfiltered.add("zzz");
                return Collections2.filter(unfiltered, NOT_YYY_ZZZ);
              }
            })
        .named("Collections2.filter")
        .withFeatures(
            CollectionFeature.SUPPORTS_ADD,
            CollectionFeature.SUPPORTS_REMOVE,
            CollectionFeature.ALLOWS_NULL_VALUES,

import org.eclipse.aether.installation.InstallRequest;

/**
 * Maven GA level metadata generator factory.
 */
@Named(VersionsMetadataGeneratorFactory.NAME)
@Singleton
public class VersionsMetadataGeneratorFactory implements MetadataGeneratorFactory {
    public static final String NAME = "versions";

    @Override
    public MetadataGenerator newInstance(RepositorySystemSession session, InstallRequest request) {

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

import com.google.inject.AbstractModule;
import org.apache.maven.SessionScoped;
import org.apache.maven.api.Session;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.internal.impl.InternalMavenSession;

/**
 * SessionScopeModule
 */
@Named
public class SessionScopeModule extends AbstractModule {

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

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

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.spi.PropertyContributor;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;

import com.ctc.wstx.stax.WstxInputFactory;
import org.apache.maven.api.di.Named;
import org.apache.maven.api.services.model.*;

@Named
public class DefaultRootLocator implements RootLocator {

    public boolean isRootDirectory(Path dir) {
        if (Files.isDirectory(dir.resolve(".mvn"))) {
            return true;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.api.Artifact;
import org.apache.maven.api.ArtifactCoordinate;
import org.apache.maven.api.di.Named;
import org.apache.maven.api.di.Singleton;
import org.apache.maven.api.services.ArtifactManager;
import org.apache.maven.api.services.ArtifactResolver;
import org.apache.maven.api.services.ArtifactResolverException;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl;

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

import java.util.Collection;
import java.util.List;

import org.apache.maven.api.*;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.services.*;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl;

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

import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.util.Objects;

        if (property == null) {
            return false;
        }

        String name = property.getName();
        boolean reverseName = false;

        if (name != null && name.startsWith("!")) {
            reverseName = true;
            name = name.substring(1);
        }

        if (name == null || name.isEmpty()) {
            problems.add(
                    BuilderProblem.Severity.ERROR,