* artifact resolution, dependency management, and build execution. These services
 * form the backbone of Maven's extensible architecture.
 *
 * @since 4.0.0
 */

 * under the License.
 */
package org.apache.maven.api;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nullable;

/**
 * A dependency exclusion.
 *
 * @since 4.0.0
 * @see DependencyCoordinates#getExclusions()
 */
@Experimental
public interface Exclusion {
    @Nullable
    String getGroupId();

    @Nullable
    String getArtifactId();

 */
package org.apache.maven.api.services;

import java.io.Serial;

import org.apache.maven.api.annotations.Consumer;
import org.apache.maven.api.annotations.Experimental;

/**
 * @since 4.0.0
 */
@Experimental
@Consumer
public class TransportProviderException extends MavenException {

    @Serial
    private static final long serialVersionUID = -6066070072576465969L;

 * <p>
 * Implementation must have {@code equals()} and {@code hashCode()} implemented, so implementations of this interface
 * can be used as keys.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
@SuppressWarnings("checkstyle:InterfaceIsType")
public interface Language extends ExtensibleEnum {

    /**

 *
 * @see Version
 * @see VersionRange
 * @see org.apache.maven.api.services.VersionParser#parseVersionConstraint(String)
 * @see org.apache.maven.api.Session#parseVersionConstraint(String)
 * @since 4.0.0
 */
@Experimental
public interface VersionConstraint {
    /**
     * Returns the range of this constraint, or {@code null} if none.
     * <p>

package org.apache.maven.api.services;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.settings.Settings;

/**
 *
 * @since 4.0.0
 */
@Experimental
public interface SettingsBuilderResult extends Result<SettingsBuilderRequest> {

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

package org.apache.maven.api.services;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.toolchain.PersistedToolchains;

/**
 *
 * @since 4.0.0
 */
@Experimental
public interface ToolchainsBuilderResult extends Result<ToolchainsBuilderRequest> {
    /**
     * Gets the assembled toolchains.
     *
     * @return the assembled toolchains, never {@code null}

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.plugin.descriptor.PluginDescriptor;

/**
 * Reads and writes a {@link PluginDescriptor} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

package org.apache.maven.api.services.xml;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.settings.Settings;

/**
 * Reads and writes a {@link Settings} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

 * and descriptors. These services handle XML parsing, transformation, and serialization
 * while maintaining Maven's model integrity.
 *
 * @since 4.0.0
 */