* This logger is used in case of "early failures" (when no logging may be set up yet).
 */
public class SystemLogger implements Logger {
    private final PrintWriter out;
    private final Level threshold;

    public SystemLogger(@Nullable OutputStream out) {
        this(out, null);
    }

    public SystemLogger(@Nullable OutputStream out, @Nullable Level threshold) {

import org.apache.maven.api.cli.Parser;
import org.apache.maven.api.cli.ParserRequest;
import org.apache.maven.api.services.MessageBuilderFactory;
import org.apache.maven.cling.invoker.logging.SystemLogger;
import org.apache.maven.jline.JLineMessageBuilderFactory;
import org.codehaus.plexus.classworlds.ClassWorld;

import static java.util.Objects.requireNonNull;

/**
 * The CLI "new-gen".
 */

import org.apache.maven.artifact.repository.layout.DefaultRepositoryLayout;
import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.cling.invoker.logging.Slf4jLogger;
import org.apache.maven.cling.invoker.logging.SystemLogger;
import org.apache.maven.cling.invoker.spi.PropertyContributorsHolder;
import org.apache.maven.cling.logging.Slf4jConfiguration;
import org.apache.maven.cling.logging.Slf4jConfigurationFactory;