if (mojoDescriptor.isV4Api()) {
                // For Maven 4 plugins, register a service so that they can be directly injected into plugins
                Map<Class<? extends Service>, Supplier<? extends Service>> services = sessionV4.getAllServices();
                services.forEach((itf, svc) -> scope.seed((Class<Service>) itf, (Supplier<Service>) svc));

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

import java.util.List;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.services.Request;
import org.apache.maven.api.services.Result;

/**
 * Exception thrown when a batch request operation fails. This exception contains the results
 * of all requests that were attempted, including both successful and failed operations.

    /**
     * Notifies the spy of some build event/operation.
     *
     * @param event The event, never {@code null}.
     * @see org.apache.maven.api.services.SettingsBuilderRequest
     * @see org.apache.maven.api.services.SettingsBuilderResult
     * @see org.apache.maven.execution.MavenExecutionRequest
     * @see org.apache.maven.execution.MavenExecutionResult

 * the exact versions of tools they wish to use.</p>
 *
 * <p>
 * Toolchains can be obtained through the {@link org.apache.maven.api.services.ToolchainManager ToolchainManager}
 * service. This service provides methods to retrieve and manage toolchains defined
 * in the Maven configuration.
 * </p>
 *
 * <p>

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.util.Collections;

import org.apache.maven.api.services.ModelBuilder;
import org.apache.maven.api.services.model.LifecycleBindingsInjector;
import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.model.root.RootLocator;
import org.eclipse.aether.RepositorySystem;

 * limitations under the License.
 */

package gradlebuild

import org.gradle.api.provider.SetProperty
import org.gradle.api.services.BuildService
import org.gradle.api.services.BuildServiceParameters
import org.gradle.tooling.events.FinishEvent
import org.gradle.tooling.events.OperationCompletionListener
import org.gradle.tooling.events.task.TaskFinishEvent

     * {@link org.apache.maven.api.services.BuilderProblem.Severity#ERROR}.
     */
    default boolean hasErrorProblems() {
        return hasProblemsFor(BuilderProblem.Severity.ERROR);
    }

    /**
     * Returns {@code true} if there is at least one problem collected with severity equal or more severe than
     * {@link org.apache.maven.api.services.BuilderProblem.Severity#FATAL}.
     */

import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.model.PluginContainer;
import org.apache.maven.api.model.PluginExecution;
import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.PackagingRegistry;
import org.apache.maven.api.services.TypeRegistry;
import org.apache.maven.api.spi.PackagingProvider;
import org.apache.maven.impl.ExtensibleEnumRegistries;

import org.apache.maven.api.Version;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;
import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.LookupException;
import org.apache.maven.api.services.MavenException;
import org.apache.maven.api.settings.Settings;
import org.apache.maven.api.toolchain.ToolchainModel;

- Some base services that are available to code hosted by the runtime. This varies by runtime.
- Additional constraints. For example, the CLI client runtimes limit the libraries that are available to the code in that runtime, for performance reasons. 

Other modules and platforms define the services that they contribute to the runtime.