public void setImplementation(String implementation) {
        this.implementation = implementation;
    }

    public String getSince() {
        return since;
    }

    public void setSince(String since) {
        this.since = since;
    }

    /**
     * Creates a shallow copy of this parameter.
     */
    @Override
    public Parameter clone() {
        try {

// CHECKSTYLE_OFF: RegexpHeader
/**
 * <a href="https://maven.apache.org/resolver/">Maven Resolver</a> extensions for utilizing the Maven POM and Maven
 * repository metadata.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")

  public void testRemove_nullKeyQueriesUnsupported() {
    try {
      assertFalse(getMap().remove(null, v3()));
    } catch (NullPointerException tolerated) {
      // since the operation would be a no-op, the exception is not required
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES)

import org.eclipse.aether.version.VersionScheme;

/**
 * Default version scheme provider: provides singleton {@link GenericVersionScheme} instance.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Singleton
@Named
@Deprecated(since = "4.0.0")
public final class DefaultVersionSchemeProvider implements Provider<VersionScheme> {
    private final GenericVersionScheme genericVersionScheme;

import java.util.ArrayList;
import java.util.List;

import org.apache.maven.settings.Settings;

/**
 * Collects the output of the settings builder.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.SettingsBuilder} instead
 */
@Deprecated(since = "4.0.0")
class DefaultSettingsBuildingResult implements SettingsBuildingResult {

    private Settings effectiveSettings;

    private List<SettingsProblem> problems;

/**
 * Builds the effective settings from a user settings file, a project settings file
 * and/or a global settings file.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.SettingsBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface SettingsBuilder {

    /**
     * Builds the effective settings of the specified settings files.
     *

import org.apache.maven.settings.io.SettingsParseException;

/**
 * Collects problems that are encountered during settings building.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.SettingsBuilder} instead
 */
@Deprecated(since = "4.0.0")
class DefaultSettingsProblemCollector implements SettingsProblemCollector {

    private List<SettingsProblem> problems;

    private String source;

import java.util.List;

import org.apache.maven.settings.Settings;

/**
 * Collects the output of the settings builder.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.SettingsBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface SettingsBuildingResult {

    /**
     * Gets the assembled settings.
     *
     * @return The assembled settings, never {@code null}.

 * under the License.
 */
package org.apache.maven.settings.building;

/**
 * Collects problems that are encountered during settings building.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.SettingsBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface SettingsProblemCollector {

    /**
     * Adds the specified problem.
     *

     * @param proxy proxy
     * @since 3.0-alpha-3
     */
    void setProxy(Proxy proxy);

    /**
     * @since 3.0-alpha-3
     * @return repository proxy
     */
    Proxy getProxy();

    /**
     * @since 3.0.3
     * @return the repositories mirrored by the actual one
     */
    List<ArtifactRepository> getMirroredRepositories();

    /**
     * @since 3.0.3