*/
    void add(Problem.Severity severity, String message, int line, int column, Exception cause);

    /**
     * The next messages will be bound to this source. When calling this method again, previous messages keep
     * their source, but the next messages will use the new source.
     *
     * @param source a source
     */
    void setSource(String source);

    /**
     *

  </description>

  <build>
    <plugins>
      <!-- NOTE: It's essential part of this test variant to *not* define the test plugin again, i.e. bypass plugin merging -->
    </plugins>
  </build>

            exit 1;
          fi
        env:
          TAR_BALL: apache-maven/target/apache-maven-bin.tar.gz

      - name: Clean with Maven
        run: mvn clean

      - name: Build again with Maven SNAPSHOT
        shell: bash
        run: |
          set +e
          export PATH=${{ env.TEMP_MAVEN_BIN_DIR }}:$PATH

  </description>

  <build>
    <plugins>
      <!-- NOTE: It's essential part of this test variant to redefine the test plugin again, i.e. trigger plugin merging -->
      <plugin>
        <groupId>org.apache.maven.its.plugins</groupId>
        <artifactId>maven-it-plugin-log-file</artifactId>
        <version>2.1-SNAPSHOT</version>
      </plugin>

     * are NOT recommended (code like {@code "pom".equals(project.getPackaging)} must be avoided). Use method
     * {@link #getArtifacts()} to gain access to POM or build artifact.
     *
     * @see #getArtifacts()
     */
    @Nonnull
    Packaging getPackaging();

    /**