String ROLE = ArtifactTransformationManager.class.getName();

    /**
     * Take in an artifact and return the transformed artifact for locating in the remote repository. If no
     * transformation has occurred the original artifact is returned.
     *
     * @param artifact           Artifact to be transformed.
     * @param request the repositories to check
     */

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.transformation;

/**
 * Exception that may be thrown by the {@link org.apache.maven.artifact.Artifact#getFile()}
 * implementation.
 */
public class TransformationFailedException extends RuntimeException {

     * Simply converts the given content to an xml string.
     *
     * @param content the object to convert
     * @return the xml string representation
     * @throws XmlWriterException if an error occurs during the transformation
     * @see #fromXmlString(String)
     */
    @Nonnull
    default String toXmlString(@Nonnull T content) throws XmlWriterException {
        StringWriter sw = new StringWriter();
        write(content, sw);

    /**
     * @param context the context, cannot be null
     * @param model   the model to transform
     * @param path    the pom file, cannot be null
     * @throws ModelTransformerException if the transformation fails
     */
    @Nonnull
    Model transform(@Nonnull ModelTransformerContext context, @Nonnull Model model, @Nonnull Path path)
            throws ModelTransformerException;

 * under the License.
 */
package org.apache.maven.internal.aether;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.apache.maven.internal.transformation.ConsumerPomArtifactTransformer;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.impl.Installer;
import org.eclipse.aether.installation.InstallRequest;

            ArtifactRepository selected,
            ArtifactRepository localRepository)
            throws RepositoryMetadataStoreException {
        // TODO this could be a lot nicer... should really be in the snapshot transformation?
        if (metadata.isSnapshot()) {
            Metadata prevMetadata = metadata.getMetadata();

            for (ArtifactRepository repository : previousMetadata.keySet()) {

        ensurePositive(xSumOfSquaresOfDeltas * ySumOfSquaresOfDeltas);
    return ensureInUnitRange(sumOfProductsOfDeltas / Math.sqrt(productOfSumsOfSquaresOfDeltas));
  }

  /**
   * Returns a linear transformation giving the best fit to the data according to <a
   * href="http://mathworld.wolfram.com/LeastSquaresFitting.html">Ordinary Least Squares linear

   *     the returned future.
   * @param executor Executor to run the function in.
   * @return A future that holds result of the transformation.
   * @since 9.0 (in 2.0 as {@code compose})
   */
  public static <I extends @Nullable Object, O extends @Nullable Object>
      ListenableFuture<O> transform(

  }

  /**
   * Returns a view of a multimap whose values are derived from the original multimap's entries. In
   * contrast to {@link #transformValues}, this method's entry-transformation logic may depend on
   * the key as well as the value.
   *
   * <p>All other properties of the transformed multimap, such as iteration order, are left intact.
   * For example, the code:
   *