* @param problem The problem whose location should be formatted, must not be {@code null}.
     * @param projectId The {@code <groupId>:<artifactId>:<version>} of the corresponding project, may be {@code null}
     *            to force output of model id and source.
     * @return The formatted problem location or an empty string if unknown, never {@code null}.
     */
    public static String formatLocation(ModelProblem problem, String projectId) {

                                } catch (InterruptedException ie) {
                                    // ignore
                                }
                                file.delete(); // if this fails, forget about it
                            }
                        }
                    } catch (TransferFailedException e) {
                        getLogger()

        if (proxies == null) {
            proxies = new ArrayList<>();
        }

        return proxies;
    }

    //
    // Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
    // this here, possibly indefinitely.
    //
    public ArtifactResolutionRequest setCache(RepositoryCache cache) {
        return this;
    }

            TransferListener downloadMonitor,
            boolean force)
            throws TransferFailedException, ResourceDoesNotExistException {
        TransferFailedException tfe = null;

        for (ArtifactRepository repository : remoteRepositories) {
            try {
                getArtifact(artifact, repository, downloadMonitor, force);

                if (artifact.isResolved()) {

 * for exclusive consumption by the repository system and is opaque to the cache implementation.
 *
 */
@Deprecated
//
// Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
// this here, possibly indefinitely.
//
public interface RepositoryCache {

    /**

    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-transport-file</artifactId>
    </dependency>
    <!-- HTTP/1.1, lowest priority, Java8+ (still must as some ITs force it) -->
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-transport-wagon</artifactId>
    </dependency>
    <!-- HTTP/1.1, medium priority, Java8+ -->
    <dependency>

    }

    @Deprecated
    public List<MavenProject> getSortedProjects() {
        return getProjects();
    }

    @Deprecated
    //
    // Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
    // this here, possibly indefinitely.
    //
    public RepositoryCache getRepositoryCache() {
        return null;
    }

    @Deprecated

            throws TransferFailedException, ResourceDoesNotExistException;

    void getArtifact(
            Artifact artifact,
            List<ArtifactRepository> remoteRepositories,
            TransferListener transferListener,
            boolean force)
            throws TransferFailedException, ResourceDoesNotExistException;

                if (vertex != null) {
                    addEdge(projectVertex, vertex, project, projectMap, force, safe);
                }
            } else {
                for (Vertex vertex : vertices.values()) {
                    addEdge(projectVertex, vertex, project, projectMap, force, safe);
                }
            }
        }
    }

    private void addEdge(

          <description>
            Specifies that this parameter can be configured directly by the user (as in the case of POM-specified
            configuration). This is useful when you want to force the user to use common POM elements rather than
            plugin configurations, as in the case where you want to use the artifact's final name as a parameter. In