List<Toolchain> toolchains = new ArrayList<>();

        if (models != null) {
            ToolchainFactory fact = factories.get(type);

            if (fact == null) {
                logger.error(
                        "Missing toolchain factory for type: " + type + ". Possibly caused by misconfigured project.");
            } else {
                for (ToolchainModel model : models) {
                    try {

                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {
                throw new ArtifactMetadataRetrievalException("Error retrieving metadata", e, a);
            }
        }

        if ("i".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {

        }
    }

    /**
     * Simply parse the given xml string.
     *
     * @param xml the input xml string
     * @return the parsed object
     * @throws XmlReaderException if an error occurs during the parsing
     * @see #toXmlString(Object)
     */
    public static PluginDescriptor fromXml(@Nonnull String xml) throws XmlReaderException {
        return new DefaultPluginXmlFactory().fromXmlString(xml);

    }

    /**
     * Append message content in error style.
     * By default, bold red
     *
     * @param message the message to append
     * @return the current builder
     */
    @Nonnull
    default MessageBuilder error(Object message) {
        return style(".error:-bold,f:red", message);
    }

    /**
     * Append message content in success style.

        return ArtifactUtils.versionlessKey(project.getGroupId(), project.getArtifactId());
    }

    public void registerBuildFailure(MavenProject project, Exception error, String task, long time) {
        buildFailuresByProject.put(getProjectKey(project), new BuildFailure(project, time, error));
    }

    public boolean hasBuildFailures() {
        return !buildFailuresByProject.isEmpty();
    }

@Experimental
public class ArtifactDeployerException extends MavenException {

    /**
     *
     */
    private static final long serialVersionUID = 7421964724059077698L;

    /**
     * @param message the message of the error
     * @param e {@link Exception}
     */
    public ArtifactDeployerException(String message, Exception e) {
        super(message, e);
    }

 * under the License.
 */
package org.apache.maven.artifact;

import java.net.MalformedURLException;

import org.codehaus.plexus.component.repository.exception.ComponentLookupException;

/**
 * Error constructing an artifact repository.
 *
 */
public class InvalidRepositoryException extends Exception {
    private final String repositoryId;

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

/**
 * Signals an internal error in Maven itself, e.g. a programming bug.
 *
 */
public class InternalErrorException extends MavenExecutionException {

    public InternalErrorException(String message, Throwable cause) {
        super(message, cause);

 * it delegates to other components that potentially encounter problems. Then, the problem reporter can focus on
 * providing a simple error message, leaving the donkey work of creating a nice model problem to this component.
 *
 */
public interface ModelProblemCollector {

    /**
     * The collected problems.

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

import org.apache.maven.artifact.Artifact;

/**
 * Error while retrieving repository metadata from the repository.
 *
 */
@Deprecated
public class ArtifactMetadataRetrievalException extends Exception {
    private Artifact artifact;

    /**