*
     * @return an {@link Optional} containing the boolean flag, or empty if not set
     */
    @Nonnull
    Optional<Boolean> showVersionAndExit();

    /**
     * Indicates whether to show the version information.
     *
     * @return an {@link Optional} containing the boolean flag, or empty if not set
     */
    @Nonnull
    Optional<Boolean> showVersion();

    /**

              ?"${maven.project.conf}/maven.properties"

#
# Settings
#
# Define the default three levels for settings.
# The '-is' flag will override the 'maven.installation.settings' property.
# The '-ps' flag will override the 'maven.project.settings' property.
# The '-s' flag will override the 'maven.user.settings' property.
maven.installation.settings = ${maven.installation.conf}/settings.xml

    }

    /**
     * Returns the state of the "add default entities" flag.
     *
     * @return boolean
     */
    public boolean getAddDefaultEntities() {
        return delegate.getAddDefaultEntities();
    } // -- boolean getAddDefaultEntities()

    /**
     * Sets the state of the "add default entities" flag.
     *
     * @param addDefaultEntities a addDefaultEntities object.
     */

@REM   MAVEN_BATCH_PAUSE   (Optional) set to 'on' to wait for a key stroke before ending.
@REM   MAVEN_OPTS          (Optional) Java runtime options used when Maven is executed.
@REM   MAVEN_SKIP_RC       (Optional) Flag to disable loading of mavenrc files.
@REM -----------------------------------------------------------------------------

@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
@echo off

@REM   MAVEN_BATCH_PAUSE   (Optional) set to 'on' to wait for a key stroke before ending.
@REM   MAVEN_OPTS          (Optional) Java runtime options used when Maven is executed.
@REM   MAVEN_SKIP_RC       (Optional) Flag to disable loading of mavenrc files.
@REM   MAVEN_DEBUG_ADDRESS (Optional) Set the debug address. Default value is localhost:8000
@REM -----------------------------------------------------------------------------

import org.apache.maven.project.MavenProject;

/**
 * Instances of this interface retrieve and store data for the --resume / -r feature. This data is used to ensure newer
 * builds of the same project, that have the -r command-line flag, skip successfully built projects during earlier
 * invocations of Maven.
 */
public interface BuildResumptionDataRepository {
    /**

     * indirectly depends on the given project.
     *
     * @param project The project whose downstream projects should be retrieved, must not be {@code null}.
     * @param transitive A flag whether to retrieve all direct and indirect downstream projects or just the immediate
     *            downstream projects.
     * @return The downstream projects in the build order, never {@code null}.
     */

@Deprecated(since = "4.0.0")
public final class MavenArtifactProperties {
    /**
     * A boolean flag indicating whether the artifact presents some kind of bundle that physically includes its
     * dependencies, e.g. a fat WAR.
     */
    public static final String INCLUDES_DEPENDENCIES = "includesDependencies";

    /**
     * A boolean flag indicating whether the artifact is meant to be used for the compile/runtime/test build path of a

    }

    /**
     * Returns the state of the "add default entities" flag.
     *
     * @return boolean a field value
     */
    public boolean getAddDefaultEntities() {
        return delegate.getAddDefaultEntities();
    }

    /**
     * Sets the state of the "add default entities" flag.
     *
     * @param addDefaultEntities a addDefaultEntities object.
     */

    }

    /**
     * Returns the state of the "add default entities" flag.
     *
     * @return boolean
     */
    public boolean getAddDefaultEntities() {
        return delegate.getAddDefaultEntities();
    }

    /**
     * Sets the state of the "add default entities" flag.
     *
     * @param addDefaultEntities a addDefaultEntities object.
     */