* under the License.
 */
package org.apache.maven.cling.invoker.mvn;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.function.UnaryOperator;

import org.apache.maven.api.cli.mvn.MavenOptions;
import org.apache.maven.cling.invoker.LayeredOptions;

/**
 * Options that are "layered" by precedence order.
 *

 */
package org.apache.maven.cling.invoker.mvnup.goals;

import java.nio.file.Path;
import java.util.List;
import java.util.Map;

import eu.maveniverse.domtrip.Document;
import org.apache.maven.api.cli.mvnup.UpgradeOptions;
import org.apache.maven.api.di.Inject;
import org.apache.maven.api.di.Named;
import org.apache.maven.api.di.Singleton;
import org.apache.maven.cling.invoker.mvnup.UpgradeContext;

/**

 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations
 * invoke methods, they invoke methods on the {@code ForwardingBlockingDeque}.
 *
 * <p>The {@code standard} methods are not guaranteed to be thread-safe, even when all of the
 * methods that they depend on are thread-safe.
 *

            // Then
            assertTrue(Modifier.isProtected(method.getModifiers()));
            method.setAccessible(true); // Required to invoke protected method
            assertEquals(443, method.invoke(testHandler));
        }

        @Test
        @DisplayName("Should maintain inheritance hierarchy")
        void testInheritanceHierarchy() {
            // When

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

import java.util.List;
import java.util.Optional;
import java.util.function.Consumer;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;

 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * This package contains the {@code mvn} tool implementation.
 */

 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * This package contains the {@code mvnenc} tool implementation.
 */

 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * This package contains the {@code mvnsh} tool implementation.
 */

    /** node payload */
    MavenArtifactMetadata metadata;

    /** nodes, incident to this (depend on me) */
    List<MetadataGraphNode> inNodes;

    /** nodes, exident to this (I depend on) */
    List<MetadataGraphNode> exNodes;

    public MetadataGraphNode() {
        inNodes = new ArrayList<>(4);
        exNodes = new ArrayList<>(8);
    }

    public MetadataGraphNode(MavenArtifactMetadata metadata) {

          final Iterator<ListFrobber> remainingActions = actionsToPerformConcurrently.iterator();

          final Set<List<Integer>> allStates = new HashSet<>();

          @Override
          public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
            return method.equals(getAllStatesMethod)
                ? getAllStates()
                : invokeListMethod(method, args);
          }