}

    public static Map<String, Artifact> artifactMapByVersionlessId(Collection<Artifact> artifacts) {
        Map<String, Artifact> artifactMap = new LinkedHashMap<>();

        if (artifacts != null) {
            for (Artifact artifact : artifacts) {
                artifactMap.put(versionlessKey(artifact), artifact);
            }
        }

        return artifactMap;
    }

    }

    /**
     * The groupId of the artifact.
     *
     * @return the groupId
     */
    @Nonnull
    String getGroupId();

    /**
     * The artifactId of the artifact.
     *
     * @return the artifactId
     */
    @Nonnull
    String getArtifactId();

    /**
     * The version of the artifact.
     *
     * @return the version
     */
    @Nonnull

        Artifact artifact1 = new DefaultArtifact(
                groupId, artifactId, VersionRange.createFromVersion("5.0"), scope, type, classifier, artifactHandler);
        Artifact artifact2 = new DefaultArtifact(
                groupId, artifactId, VersionRange.createFromVersion("12.0"), scope, type, classifier, artifactHandler);

        assertTrue(artifact1.compareTo(artifact2) < 0);

        <artifactId>maven-profile</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-model</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-project</artifactId>

            for (Dependency dependency : dependencies) {
                Artifact artifact = createDependencyArtifact(dependency);
                if (!artifacts.containsKey(artifact.getDependencyConflictId())) {
                    artifacts.put(artifact.getDependencyConflictId(), artifact);
                }
            }

            for (Artifact artifact : artifacts.values()) {
                try {

        this.artifactId = (artifactId != null) ? artifactId : "";
        this.version = (version != null) ? version : "";
    }

    /**
     * Creates a new exception with specified detail message.
     *
     * @param message The detail message, may be {@code null}.
     * @param groupId The group id of the unresolvable model, may be {@code null}.

      <artifactId>maven-model</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-model-builder</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-settings</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>

        <artifactId>maven-core</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-embedder</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-model</artifactId>

            <artifactId>maven-pmd-plugin</artifactId>
          </plugin>
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>cobertura-maven-plugin</artifactId>
          </plugin>
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>taglist-maven-plugin</artifactId>
          </plugin>
          <plugin>

      <prefix>clean</prefix>
      <artifactId>maven-clean-plugin</artifactId>
    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>deploy</prefix>
      <artifactId>maven-deploy-plugin</artifactId>
    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>install</prefix>
      <artifactId>maven-install-plugin</artifactId>
    </plugin>
    <plugin>