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

import org.apache.maven.project.MavenProject;

/**
 * Instances of this interface retrieve and store data for the --resume / -r feature. This data is used to ensure newer
 * builds of the same project, that have the -r command-line flag, skip successfully built projects during earlier
 * invocations of Maven.
 */

        super(message);
    }

    /**
     * Constructs a new {@code MojoExecutionException} exception wrapping an underlying {@code Throwable}.
     *
     * @param cause the cause which is saved for later retrieval by the {@link #getCause()} method.
     *              A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.
     */
    public MojoException(Throwable cause) {
        super(cause);

            Files.createDirectories(localFile.toPath().getParent());
            Files.copy(remoteFile.toPath(), localFile.toPath());
        }

        artifact.setResolved(true);
    }

    public void retrieve(
            ArtifactRepository repository,
            File destination,
            String remotePath,
            ArtifactTransferListener transferListener)

        throw new UnsupportedOperationException("Cannot get available versions in this test case");
    }

    public ResolutionGroup retrieve(MetadataResolutionRequest request) throws ArtifactMetadataRetrievalException {
        return retrieve(request.getArtifact(), request.getLocalRepository(), request.getRemoteRepositories());
    }

 */
@Experimental
@Immutable
public interface ModelBuilderRequest {

    /**
     * Denotes minimal validation of POMs. This validation level is meant for processing of POMs from repositories
     * during metadata retrieval.
     */
    int VALIDATION_LEVEL_MINIMAL = 0;

    /**
     * Denotes validation as performed by Maven 2.0. This validation level is meant as a compatibility mode to allow
     * users to migrate their projects.

                }
            } catch (Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.warn("Failed to retrieve plugin descriptor for {}: {}", plugin.getId(), e.getMessage(), e);
                } else {
                    logger.warn("Failed to retrieve plugin descriptor for {}: {}", plugin.getId(), e.getMessage());
                }
            }
        }

        return null;
    }

    Wagon getWagon(String protocol) throws UnsupportedProtocolException;

    @Deprecated
    Wagon getWagon(Repository repository) throws UnsupportedProtocolException, WagonConfigurationException;

    //
    // Retriever
    //
    void getArtifact(Artifact artifact, ArtifactRepository repository, TransferListener transferListener, boolean force)
            throws TransferFailedException, ResourceDoesNotExistException;

    String name() default "";

    /**
     * alias supported to get parameter value.
     * @return the alias
     */
    @Nonnull
    String alias() default "";

    /**
     * Property to use to retrieve a value. Can come from <code>-D</code> execution, setting properties or pom
     * properties.
     * @return property name
     */
    @Nonnull
    String property() default "";

    /**

  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:

    Retrieve the file or base-url file to be "downloaded".

    * If the file (or more usefully, the base-url file) exists, proceed.

    * If the file (or base-url file) doesn't exist, assume that this location

ArtifactMetadataSour$1 { } org/apache/maven/artifact/metadata/ArtifactMetadataSour.class package org.apache.maven.artifact.metadata; public abstract interface ArtifactMetadataSour { public static final String ROLE; public abstract ResolutionGroup retrieve(org.apache.maven.artifact.Artifact, org.apache.maven.artifact.repository.ArtifactRepository, java.util.List) throws ArtifactMetadataRetr; public abstract java.util.List retrieveAvailableVer(org.apache.maven.artifact.Artifact, org.apache.maven.ar...