import java.lang.ref.WeakReference;
import org.jspecify.annotations.Nullable;

/**
 * Weak reference with a {@code finalizeReferent()} method which a background thread invokes after
 * the garbage collector reclaims the referent. This is a simpler alternative to using a {@link
 * ReferenceQueue}.
 *
 * @author Bob Lee
 * @since 2.0
 */
@J2ktIncompatible
@GwtIncompatible

 * @since 4.0.0
 */
@Experimental
public interface ModelTransformer {

    /**
     * Apply a transformation on the file model.
     *
     * @param model the input model
     * @param problems the problem collector to report any issues encountered during transformation
     * @return the transformed model, or the input model if no transformation is needed
     */
    @Nonnull
    Model transform(

}


private
class CompositeVersionsToIncubatingCollector(

    private
    val collectors: List<VersionsToIncubatingCollector>

) : VersionsToIncubatingCollector {

    override fun collectFrom(sourceFile: File): VersionsToIncubating =
        collectors
            .flatMap { it.collectFrom(sourceFile).entries }
            .associate { it.key to it.value }
}


private

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

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

import java.util.Arrays;
import java.util.List;

import org.apache.maven.DefaultMaven;

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

import java.io.File;
import java.util.List;

import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingException;

import java.util.function.Function;
import java.util.stream.Collector;
import org.jspecify.annotations.Nullable;

/**
 * GWT emulation of {@link com.google.common.collect.ImmutableBiMap}.
 *
 * @author Hayward Chan
 */
public abstract class ImmutableBiMap<K, V> extends ForwardingImmutableMap<K, V>
    implements BiMap<K, V> {
  public static <T extends @Nullable Object, K, V>
      Collector<T, ?, ImmutableBiMap<K, V>> toImmutableBiMap(

 * under the License.
 */
package org.apache.maven.model.building;

import java.util.ArrayList;
import java.util.List;

import org.apache.maven.model.Model;

/**
 * A simple model problem collector for testing the model building components.
 *
 */
@Deprecated
public class SimpleProblemCollector implements ModelProblemCollector {
    private Model model;

    private List<String> warnings = new ArrayList<>();

import java.util.Iterator;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.function.BinaryOperator;
import java.util.function.Function;
import java.util.stream.Collector;
import java.util.stream.Collectors;
import org.jspecify.annotations.Nullable;

/**
 * GWT emulated version of {@link com.google.common.collect.ImmutableSortedMap}. It's a thin wrapper
 * around a {@link java.util.TreeMap}.
 *

	// descendant of `path`, and if so, we add the corresponding gatherer to
	// the list of gatherers. This way, /api/a will return all metrics returned
	// by /api/a/b and /api/a/c (and any other matching descendant collector
	// paths).

	var gatherers []prometheus.Gatherer
	for _, collectorPath := range h.metricsData.collectorPaths {
		if collectorPath.isDescendantOf(path) {
			gatherer := h.metricsData.mgGatherers[collectorPath]

import org.apache.maven.artifact.resolver.ResolutionListener;
import org.apache.maven.artifact.resolver.filter.ArtifactFilter;
import org.apache.maven.repository.legacy.resolver.conflict.ConflictResolver;

/**
 * Artifact collector - takes a set of original artifacts and resolves the best versions to use
 * along with their metadata. No artifacts are downloaded.
 */
@Deprecated
@SuppressWarnings("checkstyle:parameternumber")