source.setGroupId("source-group");
        source.setVersion("2.0");
        assertFalse(target.merge(source));
        assertEquals("myArtifact", target.getArtifactId());
        assertEquals("myGroup", target.getGroupId());
        assertEquals("1.0-SNAPSHOT", target.getVersion());
    }
    /*--- END test common metadata ---*/

    /*--- START test "groupId/artifactId/version" metadata ---*/
    @Test

        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .groupId(requireNonNull(coordinates, "coordinates cannot be null")
                        .getGroupId())
                .artifactId(coordinates.getArtifactId())
                .version(coordinates.getVersionConstraint().toString())
                .classifier(coordinates.getClassifier())

        return getGroupId()
                + ':'
                + getArtifactId()
                + ':'
                + getExtension()
                + (c.isEmpty() ? "" : ":" + c)
                + ':'
                + getVersion();
    }

    /**
     * {@return the group identifier of the artifact}.
     *
     * @see ArtifactCoordinates#getGroupId()
     */
    @Nonnull

        Iterator<MavenProject> iterator = projects.iterator();
        while (iterator.hasNext()) {
            MavenProject project = iterator.next();
            projectNames.append(project.getGroupId()).append(":").append(project.getArtifactId());
            if (iterator.hasNext()) {
                projectNames.append(", ");
            }
        }
        return projectNames.toString();
    }

                if (deployBuildPom) {
                    // Add the main POM as a build POM with "build" classifier
                    result.add(new DefaultArtifact(
                            main.getGroupId(),
                            main.getArtifactId(),
                            BUILD_POM_CLASSIFIER,
                            main.getExtension(),
                            main.getVersion(),

        return (extension ? "extension>" : "plugin>") + plugin.getGroupId() + ":" + plugin.getArtifactId() + ":"
                + version;
    }

    private static String getId(Artifact artifact) {
        return getId(
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getExtension(),

                return step.name + "(" + step.project.getGroupId() + ":" + artifactId + ")";
            } else {
                return step.name + "(:" + artifactId + ")";
            }
        }
    }

    protected void mojo(Consumer<String> writer, MojoExecution mojoExecution) {
        String mojoExecId =
                mojoExecution.getGroupId() + ':' + mojoExecution.getArtifactId() + ':' + mojoExecution.getVersion()

        return result;
    }

    private static boolean artifactEquals(Artifact a1, Artifact a2) {
        if (a1 == a2) {
            return true;
        }

        return Objects.equals(a1.getGroupId(), a2.getGroupId())
                && Objects.equals(a1.getArtifactId(), a2.getArtifactId())
                && Objects.equals(a1.getType(), a2.getType())
                && Objects.equals(a1.getVersion(), a2.getVersion())

        assertEquals(0, dep1.getExclusions().size());
        Artifact depArtifact = dep1.getArtifact();
        assertEquals("ut.simple", depArtifact.getGroupId());
        assertEquals("dependency", depArtifact.getArtifactId());
        assertEquals("1.0", depArtifact.getVersion());
        assertEquals("1.0", depArtifact.getBaseVersion());
        assertNull(depArtifact.getFile());

import static java.util.Objects.requireNonNull;

/**
 *
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactFactoryRequest extends Request<Session> {

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    static ArtifactFactoryRequest build(