warn(CharSequence); public void warn(CharSequence, Throwable); public void warn(Throwable); public void error(CharSequence); public void error(CharSequence, Throwable); public void error(Throwable); private void print(String, CharSequence); private void print(String, Throwable); private void print(String, CharSequence, Throwable); public boolean isDebugEnabled(); public boolean isInfoEnabled(); public boolean isWarnEnabled(); public boolean isErrorEnabled(); } org/apache/maven/plugin/Mojo$1.class package...

import org.apache.maven.plugin.descriptor.Parameter;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

/**
 * Print warnings if deprecated core parameters are used in mojo.
 *
 * @since 3.9.1
 */
@Singleton
@Named
class DeprecatedCoreExpressionValidator extends AbstractMavenPluginParametersValidator {

                if (parent.getRelativePath() == null || parent.getRelativePath().isEmpty()) {
                    buffer.append(" and 'parent.relativePath' points at no local POM");
                } else {
                    buffer.append(" and 'parent.relativePath' points at wrong local POM");
                }
            }

        System.setOut(new ThreadBoundPrintStream(this.originalSystemOUtStream));
        printer = new ConsolePrinter(segmentChunks);
        new Thread(printer).start();
        printer.waitUntilRunning(true);
    }

    public void close() {
        printer.waitUntilRunning(false);
        System.setOut(this.originalSystemOUtStream);
    }

    private void setNext() {

import org.apache.maven.plugin.descriptor.Parameter;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.configuration.PlexusConfiguration;

/**
 * Print warnings if deprecated mojo or parameters of plugin are used in configuration.
 *
 */
@Singleton
@Named
class DeprecatedPluginValidator extends AbstractMavenPluginDescriptorSourcedParametersValidator {

 */
package org.apache.maven.api;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Immutable;
import org.apache.maven.api.annotations.Nonnull;

/**
 * An artifact points to a resource such as a jar file or war application.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface Artifact {

    /**
     * Returns a unique identifier for this artifact.

                        Collections.singletonList(project.getArtifact().getId()),
                        null);

                // Maven 2.x quirk: an artifact always points at the local repo, regardless whether resolved or not
                LocalRepositoryManager lrm = session.getLocalRepositoryManager();
                for (Artifact artifact : artifacts) {

** Control over downloads

  Find the control point for m2 using maven-wagon. At this point, inject
  a offline status parameter which is used when retrieving the specific Wagon.

  If <<<offline == true>>>:

  * If the wagon is not bound to "file://", then ignore the request and print
    a debug message.

  * If the wagon is bound to "file://" then:

                artifactRequest.setRepositories(RepositoryUtils.toRepos(remoteRepositories));

                // Maven 2.x quirk: an artifact always points at the local repo, regardless whether resolved or not
                LocalRepositoryManager lrm = session.getLocalRepositoryManager();
                String path = lrm.getPathForLocalArtifact(artifactRequest.getArtifact());

                for (ModelProblem problem : ((ModelBuildingException) cause).getProblems()) {
                    message += problem + "\n";
                }
                System.out.println(message);
            }

            throw e;
        }
    }

    protected MavenProject getProject(File pom) throws Exception {
        ProjectBuildingRequest configuration = newBuildingRequest();