import org.apache.maven.api.annotations.Nonnull;

/**
 * An SPI interface to extend Maven with a new enum value.
 *
 * @param <T> The type of extensible enum to extend
 */
@Experimental
@Consumer
public interface ExtensibleEnumProvider<T extends ExtensibleEnum> extends SpiService {

    /**
     * Registers new values for the T extensible enum.
     *
     * @return a collection of T instances to register
     */
    @Nonnull

 * can be used as keys.
 *
 * @since 4.0.0
 */
@Experimental
public interface ExtensibleEnum {

    /**
     * The {@code id} uniquely represents a value for this extensible enum.
     * This id should be used to compute the equality and hash code for the instance.
     *
     * @return the id
     */
    @Nonnull
    String id();

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

/**
 * Describes whether a target should be activated or not, and if that is required or optional.
 */
enum ActivationSettings {
    ACTIVATION_OPTIONAL(true, true),
    ACTIVATION_REQUIRED(true, false),
    DEACTIVATION_OPTIONAL(false, true),
    DEACTIVATION_REQUIRED(false, false);

    /**

import org.eclipse.aether.artifact.Artifact;

/**
 * Component collecting plugin validation issues and reporting them.
 *
 * @since 3.9.2
 */
public interface PluginValidationManager {
    enum IssueLocality {
        /**
         * Issue is "user actionable", is internal to the currently built project and is reparable from scope of it

import java.util.HashMap;
import java.util.Map;

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

/**
 * Scope for a dependency
 *
 * @since 4.0.0
 */
@Experimental
public enum Scope {
    EMPTY(""),
    COMPILE_ONLY("compile-only"),
    COMPILE("compile"),
    RUNTIME("runtime"),
    PROVIDED("provided"),
    TEST_COMPILE_ONLY("test-compile-only"),
    TEST("test"),

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

import static org.apache.maven.api.ExtensibleEnums.language;

/**
 * Language.
 * <p>
 * This extensible enum has two defined values, {@link #NONE} and {@link #JAVA_FAMILY},
 * but can be extended by registering a {@code org.apache.maven.api.spi.LanguageProvider}.
 * <p>

 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Version
     */
    enum Version {
        // based on ModeBuildingResult.validationLevel
        BASE,
        V20,
        V30,
        V31,
        V40
    }

    /**

 * under the License.
 */
package org.apache.maven.internal.impl;

import java.util.*;

import org.apache.maven.project.CycleDetectedException;

class Graph {
    private enum DfsState {
        VISITING,
        VISITED
    }

    final Map<String, Vertex> vertices = new LinkedHashMap<>();

    public Vertex getVertex(String id) {
        return vertices.get(id);
    }

 * and on the Java module-path.</p>
 *
 * @see org.apache.maven.api.services.DependencyResolverResult#getDispatchedPaths()
 *
 * @since 4.0.0
 */
@Experimental
public enum JavaPathType implements PathType {
    /**
     * The path identified by the Java {@code --class-path} option.
     * Used for compilation, execution and Javadoc among others.
     *

reflect.Method[] getDeclaredMethods(Class); private void MethodSorter(); private static java.util.Comparator getSorter(org.junit.FixMethodOrder); static void <clinit>(); } org/junit/internal/Throwables$State$3.class package org.junit.internal; final synchronized enum Throwables$State$3 { void Throwables$State$3(String, int); public Throwables$State processLine(String); } org/junit/internal/TextListener.class package org.junit.internal; public synchronized class TextListener extends org.junit.runner.notification.RunListener...