as a servlet container), but still allow each web application to provide its own LogFactory implementation, if it so desires. An instance of this class will then be created, and cached per class loader. The Default LogFactory Implementation The Logging Package APIs include a default LogFactory implementation class ( org.apache.commons.logging.impl.LogFactoryImpl) that is selected if no other implementation class name can be discovered. Its primary purpose is to create (as necessary) and return Log...

import java.util.HashSet;
import java.util.Set;

/**
 * Filter to only retain objects in the given scope or better. This implementation allows the accumulation of multiple
 * scopes and their associated implied scopes, so that the user can filter apply a series of implication rules in a
 * single step. This should be a more efficient implementation of multiple standard {@link ScopeArtifactFilter}
 * instances ORed together.
 *
 */

import org.eclipse.sisu.Priority;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Relocation source from standard distribution management. This is the "one and only" relocation implementation that
 * existed in Maven 3 land, uses POM distributionManagement/relocation.
 * <p>
 * Note: this component should kick-in last regarding relocations.
 *
 * @since 4.0.0
 */
@Singleton

    void flush();

    /**
     * Registers the specified cache record for usage with the given project. Integrators can use the information
     * collected from this method in combination with a custom cache implementation to dispose unused records from the
     * cache.
     *
     * @param project The project that employs the plugin realm, must not be {@code null}.

 * 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>
 * 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")

    void flush();

    /**
     * Registers the specified cache record for usage with the given project. Integrators can use the information
     * collected from this method in combination with a custom cache implementation to dispose unused records from the
     * cache.
     *
     * @param project The project that employs the plugin realm, must not be {@code null}.

    void flush();

    /**
     * Registers the specified cache record for usage with the given project. Integrators can use the information
     * collected from this method in combination with a custom cache implementation to dispose unused records from the
     * cache.
     *
     * @param project The project that employs the plugin realm, must not be {@code null}.

 *  </tr>
 *  <tr>
 *      <td>implementation</td>
 *      <td>none (detected)</td>
 *      <td>Yes</td>
 *      <td>The Mojo's fully-qualified class name (or script path in the case of non-Java Mojos).</td>
 *  </tr>
 *  <tr>
 *      <td>language</td>
 *      <td>none (detected)</td>
 *      <td>No. Default: <code>java</code></td>
 *      <td>The implementation language for this Mojo (Java, beanshell, etc.).</td>

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

/**
 * Interface that defines some kind of enums that can be extended by Maven plugins or extensions.
 *
 * Implementation must have {@code equals()} and {@code hashCode()} implemented, so implementations of this interface
 * can be used as keys.
 *
 * @since 4.0.0
 */
@Experimental
public interface ExtensibleEnum {

    /**

import java.util.Objects;
import java.util.Properties;

import org.apache.maven.toolchain.model.ToolchainModel;
import org.slf4j.Logger;

/**
 * Default abstract toolchain implementation, to be used as base class for any toolchain implementation
 * to avoid rewriting usual code.
 *
 * @since 2.0.9
 */
public abstract class DefaultToolchain // should have been AbstractToolchain...
implements Toolchain, ToolchainPrivate {