SessionData getData();

    /**
     * Returns immutable user properties to use for interpolation. The user properties have been configured directly
     * by the user, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @return the user properties, never {@code null}
     */
    @Nonnull
    Map<String, String> getUserProperties();

    /**

import java.util.Map;

/**
 * A core extension to monitor Maven's execution. Typically, such an extension gets loaded into Maven by specifying the
 * property {@code maven.ext.class.path} on the command line. As soon as dependency injection is set up, Maven
 * looks up all implementers of this interface and calls their {@link #init(Context)} method. Note:

  can conceivably be set from either the settings.xml or the command-line.

  In the event the '-o' switch is the impetus for setting offline mode, this
  should result in modification of the active profile in the MavenSettings
  instance, just as definition of the active profile from the command-line
  should result in similar modification. This object is not meant to be

          <type>String</type>
        </field>
        <field>
          <version>1.0.0</version>
          <name>cliOptions</name>
          <description>The command-line switches used to change the value of this expression.</description>
          <type>Properties</type>
          <association xml.mapStyle="explode">
            <type>String</type>

     * <pre>java -jar ${maven.repo.local}/org/apache/maven/maven-artifact/${maven.version}/maven-artifact-${maven.version}.jar "1.2.7" "1.2-SNAPSHOT"</pre>
     * command to command line. Result of given command will be something like this:
     * <pre>
     * Display parameters as parsed by Maven (in canonical form) and comparison result:
     * 1. 1.2.7 == 1.2.7
     *    1.2.7 &gt; 1.2-SNAPSHOT

 * without prior notice.
 *
 */
@Named
@Singleton
public class DefaultClassRealmManager implements ClassRealmManager {
    public static final String API_REALMID = "maven.api";

    /**
     * During normal command line build, ClassWorld is loaded by jvm system classloader, which only includes
     * plexus-classworlds jar and possibly javaagent classes, see https://issues.apache.org/jira/browse/MNG-4747.
     * <p>

        parameters or command line arguments.</description>
      <fields>
        <field>
          <name>id</name>
          <required>true</required>
          <version>4.0.0+</version>
          <type>String</type>
          <defaultValue>default</defaultValue>
          <description>The identifier of this build profile. This is used for command line

@REM -----------------------------------------------------------------------------

@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
@echo off
@REM set title of command window
title %0
@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
@if "%MAVEN_BATCH_ECHO%"=="on" echo %MAVEN_BATCH_ECHO%

@REM Execute a user defined script before this one
if not "%MAVEN_SKIP_RC%"=="" goto skipRc

          <required>true</required>
          <version>1.0.0+</version>
          <type>String</type>
          <description>
            The goal name for the Mojo, that users will reference from the command line to execute the Mojo directly,
            or inside a POM in order to provide Mojo-specific configuration.
          </description>
        </field>
        <field>
          <name>description</name>

# For Cygwin and MinGW, switch paths to Windows format before running java(1) command
if $cygwin || $mingw ; then
  [ -n "$JAVA_HOME" ] &&
    JAVA_HOME=`cygpath --windows "$JAVA_HOME"`
  LAUNCHER_JAR=`cygpath --windows "$LAUNCHER_JAR"`
  CLASSWORLDS_CONF=`cygpath --windows "$CLASSWORLDS_CONF"`
  MAVEN_HOME=`cygpath --windows "$MAVEN_HOME"`
  MAVEN_PROJECTBASEDIR=`cygpath --windows "$MAVEN_PROJECTBASEDIR"`
fi

exec "$JAVACMD" \
  $MAVEN_OPTS \