<version>1.0.0</version>
      <description>A custom lifecycle mapping definition.</description>
      <fields>
        <field>
          <name>id</name>
          <required>true</required>
          <version>1.0.0</version>
          <type>String</type>
          <description>The ID of this lifecycle, for identification in the mojo descriptor.</description>
        </field>
        <field>
          <name>phases</name>

    }

    @Override
    public void describeMismatch(final Object o, final Description description) {
        if (!(o instanceof ProjectBuildingResult)) {
            super.describeMismatch(o, description);
        } else {
            final ProjectBuildingResult r = (ProjectBuildingResult) o;
            description.appendText("was a ProjectBuildingResult with locations ");
            String messages = r.getProblems().stream()

      <version>1.0.0</version>
      <description><![CDATA[Root element of the <code>extension.xml</code> file.]]></description>
      <fields>
        <field>
          <name>exportedPackages</name>
          <version>1.0.0</version>
          <association>
            <type>String</type>
            <multiplicity>*</multiplicity>
          </association>

      <version>1.1.0</version>
      <description>Root element of the remote-resources.xml file.</description>
      <fields>
        <field>
          <name>remoteResources</name>
          <version>1.1.0</version>
          <description>
            Remote resources that are contained in a remote resources bundle.
          </description>
          <association>
            <type>String</type>

      <superClass>TrackableBase</superClass>
      <description>
        The {@code &lt;toolchains&gt;} element is the root of the descriptor.
        The following table lists all the possible child elements.
      </description>
      <version>1.0.0+</version>
      <fields>
        <field>
          <name>toolchains</name>
          <version>1.0.0+</version>
          <description>The toolchain instance definition.</description>

    }

    public void setRequired(boolean required) {
        this.required = required;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getExpression() {
        return expression;
    }

    public void setExpression(String expression) {

      <name>CoreExtensions</name>
      <description>Extensions to load.</description>
      <version>1.0.0+</version>
      <fields>
        <field>
          <name>extensions</name>
          <description>A set of build extensions to use from this project.</description>
          <version>1.0.0+</version>
          <association xml.itemsStyle="flat">

        <![CDATA[
    <offline>true</offline>
    ]]></configuration>
      <description>
        <![CDATA[
      Flags the system as offline, to prevent accessing the network to resolve artifacts or execute plugins.

      NOTE: It's also possible to switch to offline mode on a per-build basis, using the '-o' command-line option.
    ]]></description>
    </expression>
    <expression>
      <syntax>settings.interactiveMode</syntax>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>commons-logging</groupId>
  <artifactId>commons-logging</artifactId>
  <name>Logging</name>
  <version>1.0.3</version>
  <description>Commons Logging</description>
  <url>http://jakarta.apache.org/commons/logging/</url>
  <inceptionYear>2001</inceptionYear>
  <build />
  <dependencies>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>

    }

    @Override
    public void describeTo(Description description) {
        description.appendText("a ProjectBuildingResult with message ").appendValue(problemMessage);
    }

    @Override
    public void describeMismatch(final Object o, final Description description) {
        if (!(o instanceof ProjectBuildingResult)) {
            super.describeMismatch(o, description);
        } else {