}

        ArtifactHandler handler = newHandler(artifact);

        /*
         * NOTE: From Artifact.hasClassifier(), an empty string and a null both denote "no classifier". However, some
         * plugins only check for null, so be sure to nullify an empty classifier.
         */
        org.apache.maven.artifact.Artifact result = new org.apache.maven.artifact.DefaultArtifact(
                artifact.getGroupId(),

                version = version.substring(0, version.length() - SNAPSHOT.length()) + qualifier;
            }

            SnapshotVersion sv = SnapshotVersion.newBuilder()
                    .classifier(artifact.getClassifier())
                    .extension(artifact.getExtension())
                    .version(version)
                    .updated(lastUpdated)
                    .build();

    Artifact createProjectArtifact(String groupId, String artifactId, String version);

    Artifact createArtifactWithClassifier(
            String groupId, String artifactId, String version, String type, String classifier);

    Artifact createPluginArtifact(Plugin plugin);

    Artifact createDependencyArtifact(Dependency dependency);

                "sample.group",
                "sample-art",
                VersionRange.createFromVersion("1.0"),
                "scope",
                "jar",
                "classifier",
                null);
        artifact.setFile(getTestFile("target/sample-art"));

        StringWagon wagon = (StringWagon) wagonManager.getWagon("string");

        wagon.clearExpectedContent();

        }

        return dom;
    }

    /**
     * @deprecated Use MavenProjectHelper.attachArtifact(..) instead.
     */
    @Deprecated
    public void attachArtifact(String type, String classifier, File file) {}

    /**
     * @deprecated Use {@link org.apache.maven.model.io.ModelWriter}.
     */
    @Deprecated
    public void writeModel(Writer writer) throws IOException {

   * href="http://tools.ietf.org/html/rfc4291#section-2.5.5.1">RFC 4291</a>.
   *
   * <p>NOTE: This method is different from {@link Inet6Address#isIPv4CompatibleAddress} in that it
   * more correctly classifies {@code "::"} and {@code "::1"} as proper IPv6 addresses (which they
   * are), NOT IPv4 compatible addresses (which they are generally NOT considered to be).
   *

        verifier.verify(logger, calls(1)).debug("  Excluded: {}", "group1:artifact2:ext:classifier1:null");
        verifier.verify(logger, calls(1))
                .debug("Populating class realm {}", "project>modelGroup1:modelArtifact1:modelVersion1");
        verifier.verify(logger, calls(1)).debug("  Included: {}", "group1:artifact1:ext:classifier1:null");
    }

    @Test
    void testDebugDisabled() throws PlexusContainerException {