this.transfers = new IdentityHashMap<>();
    }

    @Override
    public void debug(String message) {}

    @Override
    public void transferCompleted(TransferEvent transferEvent) {
        ArtifactTransferEvent event = wrap(transferEvent);

        Long transferred;
        synchronized (transfers) {
            transferred = transfers.remove(transferEvent.getResource());
        }

import org.eclipse.aether.spi.connector.MetadataUpload;
import org.eclipse.aether.spi.connector.RepositoryConnector;
import org.eclipse.aether.transfer.ArtifactNotFoundException;
import org.eclipse.aether.transfer.ArtifactTransferException;
import org.eclipse.aether.transfer.MetadataNotFoundException;
import org.eclipse.aether.transfer.MetadataTransferException;

/**
 */
public class TestRepositoryConnector implements RepositoryConnector {

 */
package org.apache.maven.cli.transfer;

import java.io.PrintStream;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.util.Locale;

import org.apache.maven.jline.MessageUtils;
import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferCancelledException;
import org.eclipse.aether.transfer.TransferEvent;

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

import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferCancelledException;
import org.eclipse.aether.transfer.TransferEvent;
import org.eclipse.aether.transfer.TransferResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Slf4jMavenTransferListener

 * under the License.
 */
package org.apache.maven.cli.transfer;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.function.Consumer;

import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferCancelledException;

public class TestTransferListener extends AbstractTransferListener {

    private final List<String> transfers = new ArrayList<>();

    public List<String> getTransfers() {
        return transfers;
    }

    public void addTransfer(String name) {
        transfers.add(name);
    }

 */
package org.apache.maven.cling.transfer;

import java.io.PrintWriter;
import java.time.Duration;
import java.util.concurrent.TimeUnit;

import org.apache.maven.api.MonotonicClock;
import org.apache.maven.api.services.MessageBuilder;
import org.apache.maven.api.services.MessageBuilderFactory;
import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferCancelledException;

 */
package org.apache.maven.cling.transfer;

import java.io.File;

import org.eclipse.aether.DefaultRepositorySystemSession;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.transfer.TransferCancelledException;
import org.eclipse.aether.transfer.TransferEvent;
import org.eclipse.aether.transfer.TransferListener;
import org.eclipse.aether.transfer.TransferResource;
import org.junit.jupiter.api.Test;

import org.eclipse.aether.transfer.TransferEvent;
import org.eclipse.aether.transfer.TransferListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static java.util.Objects.requireNonNull;

/**
 * A {@link TransferListener} implementation that wraps another delegate {@link TransferListener} but makes it run
 * on single thread, keeping the listener logic simple. This listener also blocks on last transfer event to allow

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

import org.apache.maven.execution.ExecutionEvent;
import org.eclipse.aether.transfer.TransferEvent;

/**
 * An abstract build event sink.
 */
public interface BuildEventListener {

    void sessionStarted(ExecutionEvent event);

    void projectStarted(String projectId);