<type>org.apache.maven.project.MavenProject</type>
          <required>true</required>
          <editable>false</editable>
          <description>The current MavenProject instance, which will have a new executionProject set after execution.</description>
        </parameter>
        <parameter>
          <name>session</name>
          <type>org.apache.maven.execution.MavenSession</type>
          <required>true</required>

    <artifactId>maven</artifactId>
    <version>4.0.0-beta-1-SNAPSHOT</version>
  </parent>

  <artifactId>maven-api</artifactId>
  <packaging>pom</packaging>
  <name>Maven 4 API</name>
  <description>A new immutable API for Maven 4 to better manage what plugins and extensions can influence.</description>

  <modules>
    <module>maven-api-meta</module>
    <module>maven-api-di</module>
    <module>maven-api-xml</module>

          <code><![CDATA[    private java.util.Map expressionsBySyntax;

    public java.util.Map getExpressionsBySyntax()
    {
        if ( expressionsBySyntax == null )
        {
            expressionsBySyntax = new java.util.HashMap();

            java.util.List expressions = getExpressions();

            if ( expressions != null && !expressions.isEmpty() )
            {

          <name>artifactId</name>
          <version>4.0.0+</version>
          <description>The new artifact ID of the artifact.</description>
          <type>String</type>
        </field>
        <field>
          <name>version</name>
          <version>4.0.0+</version>
          <description>The new version of the artifact.</description>
          <type>String</type>
        </field>
        <field>

        public void setSourceLevel(String sourceLevel) {
            if (sourceLevelSet) {
                throw new IllegalStateException("Cannot reset sourceLevel attribute; it is already set to: " + sourceLevel);
            } else if (!(USER_LEVEL.equals(sourceLevel) || GLOBAL_LEVEL.equals(sourceLevel))) {
                throw new IllegalArgumentException("sourceLevel must be one of: {" + USER_LEVEL + "," + GLOBAL_LEVEL + "}");
            } else {

                    }
                    if ( updateSnapshotVersions )
                    {
                        java.util.Map<String, SnapshotVersion> versions = new java.util.LinkedHashMap<>();
                        // never convert from legacy to new format if either source or target is legacy format
                        if ( !v.getSnapshotVersions().isEmpty() )
                        {

    public void setSourceLevel(String sourceLevel) {
        if (sourceLevelSet) {
            throw new IllegalStateException("Cannot reset sourceLevel attribute; it is already set to: " + sourceLevel);
        } else if (!(USER_LEVEL.equals(sourceLevel) || PROJECT_LEVEL.equals(sourceLevel)  || GLOBAL_LEVEL.equals(sourceLevel))) {