import static java.util.Objects.requireNonNull;

/**
 * Proto {@link Logger} that just passes to functioning {@link org.slf4j.Logger} instance.
 */
public class Slf4jLogger implements Logger {
    private final org.slf4j.Logger logger;

    public Slf4jLogger(org.slf4j.Logger logger) {
        this.logger = requireNonNull(logger, "logger");
    }

    @Override
    public void log(Level level, String message, Throwable error) {

        if (!toolchainsResult.getProblems().isEmpty() && slf4jLogger.isWarnEnabled()) {
            slf4jLogger.warn("");
            slf4jLogger.warn("Some problems were encountered while building the effective toolchains");

            for (Problem problem : toolchainsResult.getProblems()) {
                slf4jLogger.warn("{} @ {}", problem.getMessage(), problem.getLocation());
            }

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;