* identity of a model. The tag allows for further classification of the associated data on the sole discretion of the
 * model builder.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ModelCache {

    <T> T computeIfAbsent(String groupId, String artifactId, String version, String tag, Supplier<T> data);

     * 
     * @return the error code
     */
    public int getErrorCode () {
        return this.error;
    }


    /**
     * 
     * @return the root cause
     * @deprecated use {@link #getCause()}
     */
    @Deprecated
    public Throwable getRootCause () {
        return getCause();
    }

  @Override
  void writeChars(String s);

  @Override
  void writeUTF(String s);

  /**
   * @deprecated This method is dangerous as it discards the high byte of every character. For
   *     UTF-8, use {@code write(s.getBytes(StandardCharsets.UTF_8))}.
   */
  @Deprecated
  @Override
  void writeBytes(String s);

  /** Returns the contents that have been written to this instance, as a byte array. */

import org.apache.maven.model.building.ModelProblemCollector;

/**
 * Handles injection of dependency management into the model.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface DependencyManagementInjector {

    /**
     * Merges default values from the dependency management section of the given model into itself.
     *

import org.apache.maven.model.building.ModelProblemCollector;

/**
 * Handles injection of plugin management into the model.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface PluginManagementInjector {

    /**
     * Merges default values from the plugin management section of the given model into itself.
     *

import org.eclipse.aether.installation.InstallRequest;

/**
 * Maven G level metadata generator factory.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Named(PluginsMetadataGeneratorFactory.NAME)
@Singleton
@Deprecated(since = "4.0.0")
public class PluginsMetadataGeneratorFactory implements MetadataGeneratorFactory {
    public static final String NAME = "plugins";

import org.eclipse.aether.installation.InstallRequest;

/**
 * Maven GAV level metadata generator factory.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Named(SnapshotMetadataGeneratorFactory.NAME)
@Singleton
@Deprecated(since = "4.0.0")
public class SnapshotMetadataGeneratorFactory implements MetadataGeneratorFactory {
    public static final String NAME = "snapshot";

import org.eclipse.aether.installation.InstallRequest;

/**
 * Maven GA level metadata generator factory.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Named(VersionsMetadataGeneratorFactory.NAME)
@Singleton
@Deprecated(since = "4.0.0")
public class VersionsMetadataGeneratorFactory implements MetadataGeneratorFactory {
    public static final String NAME = "versions";

import org.apache.maven.toolchain.v4.MavenToolchainsStaxWriter;

/**
 * Handles serialization of toolchains into the default textual format.
 *
 * @deprecated since 4.0.0, use {@link MavenToolchainsStaxWriter} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultToolchainsWriter implements ToolchainsWriter {

    @Override

pkg runtime, func GOROOT //deprecated #51473...