<artifactId>default</artifactId>
        <version>3.0</version>
        <configuration>
          <defaults><!-- equivalent to combine.children="merge" combine.self="merge" -->
            <!-- merge the content of the configuration element according to element name -->
            <parent>child</parent>
            <child>child</child>
            <parent-only>parent</parent-only>

    ProjectBuildingRequest setRepositorySession(RepositorySystemSession repositorySession);

    /**
     * Sets the merge mode used to combine repositories declared in the POM with the repositories specified in this
     * request.
     *
     * @param mode The repository merge mode, must not be {@code null}.
     * @return This request for chaining, never {@code null}.
     * @see #setRemoteRepositories(List)
     */

        result.setLocations(locations);

        return result;
    } // -- InputLocation merge( InputLocation, InputLocation, boolean )

    /**
     * Method merge.
     *
     * @param target
     * @param indices
     * @param source
     * @return InputLocation
     */
    public static InputLocation merge(
            InputLocation target, InputLocation source, java.util.Collection<Integer> indices) {

    rechoir "^0.8.0"
    webpack-merge "^5.7.3"

webpack-merge@^4.1.5:
  version "4.2.2"
  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-4.2.2.tgz#a27c52ea783d1398afd2087f547d7b9d2f43634d"
  integrity sha512-TUE1UGoTX2Cd42j3krGYqObZbOD+xF7u28WB7tfUordytSjbWTIjK/8V0amkBfTYN4/pB/GIDlJZZ657BGG19g==
  dependencies:
    lodash "^4.17.15"

webpack-merge@^5.7.3:
  version "5.8.0"

              <include>org.apache.maven.toolchain.merge</include>
            </includes>
            <excludes>
              <!--              <exclude>org.apache.maven.toolchain.building.DefaultToolchainsBuilder#DefaultToolchainsBuilder():CONSTRUCTOR_REMOVED</exclude>-->

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.settings.merge;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.settings.IdentifiableBase;
import org.apache.maven.settings.Settings;

/**

 * <p>
 * A type can be marked {@link Consumer} or {@link Provider} but not both. A type is assumed to be
 * {@link Consumer} if it is not marked either {@link Consumer} or {@link Provider}.
 * <p>
 * A package can be marked {@link Consumer}. In this case, all types in the package are considered
 * to be a provider type regardless of whether they are marked {@link Consumer} or {@link Provider}.
 *
 * @see Provider

    // lower bound in the merge range is entirely contained by the merge range.
    Set<Entry<Cut<K>, RangeMapEntry<K, V>>> entriesInMergeRange =
        entriesByLowerBound.subMap(range.lowerBound, range.upperBound).entrySet();

    // Create entries mapping any unmapped ranges in the merge range to the specified value.

        String dateBefore = gregorianDate();

        RemoteSnapshotMetadata metadata =
                new RemoteSnapshotMetadata(new DefaultArtifact("a:b:1-SNAPSHOT"), new Date(), null);
        metadata.merge(new Metadata());

        String dateAfter = gregorianDate();

        String ts = metadata.metadata.getVersioning().getSnapshot().getTimestamp();
        String datePart = DATE_FILTER.matcher(ts).replaceAll("");

  }

  @Test
  fun merge() {
    val a = Settings()
    a[Settings.HEADER_TABLE_SIZE] = 10000
    a[Settings.MAX_HEADER_LIST_SIZE] = 20000
    a[Settings.INITIAL_WINDOW_SIZE] = 30000
    val b = Settings()
    b[Settings.MAX_HEADER_LIST_SIZE] = 40000
    b[Settings.INITIAL_WINDOW_SIZE] = 50000
    b[Settings.MAX_CONCURRENT_STREAMS] = 60000
    a.merge(b)
    assertThat(a.headerTableSize).isEqualTo(10000)