return;
        }
        final Element root = webXmlDocument.getDocumentElement();
        final String schemaLocation = root.getAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "schemaLocation");
        assertTrue("schemaLocation should reference web-app_6_1.xsd", schemaLocation.contains("web-app_6_1.xsd"));
    }

        void shouldGetSchemaLocationForModelVersion(String targetVersion) {
            String schemaLocation = ModelVersionUtils.getSchemaLocationForModelVersion(targetVersion);
            assertNotNull(schemaLocation);
            assertTrue(
                    schemaLocation.contains(targetVersion),
                    "Expected " + schemaLocation + " to contain " + targetVersion);
        }

        @Test

  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/EXTENSIONS/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/core-extensions-${version}.xsd">

  <id>core-extensions</id>
  <name>CoreExtensions</name>
  <description><![CDATA[
  <p>This is a reference for the Core Extensions descriptor.</p>

  xsi:schemaLocation="http://modello.codehaus.org/MODELLO/1.0.0 http://modello.codehaus.org/xsd/modello-1.0.0.xsd"
  xml.namespace="http://maven.apache.org/PARAMDOC/${version}"
  xml.schemaLocation="http://maven.apache.org/xsd/paramdoc-${version}.xsd">
  <id>paramdoc</id>
  <name>Paramdoc</name>
  <description><![CDATA[Documentation on parameter expressions supported by Maven for use in plugins.]]></description>

  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/LIFECYCLE/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/lifecycle-${version}.xsd">
  <id>lifecycle</id>
  <name>Lifecycle</name>
  <description>
    Configuration of custom lifecycle mappings for the plugin, as generally stored in

  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/TOOLCHAINS/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/toolchains-${version}.xsd">
  <id>toolchains</id>
  <name>MavenToolchains</name>
  <description><![CDATA[
    This is a reference for the Maven Toolchains descriptor.

  xsi:schemaLocation="http://modello.codehaus.org/MODELLO/1.0.0 http://modello.codehaus.org/xsd/modello-1.0.0.xsd"
  xml.namespace="http://maven.apache.org/PROFILES/${version}"
  xml.schemaLocation="http://maven.apache.org/xsd/profiles-${version}.xsd">
  <id>profiles</id>
  <name>Profiles</name>
  <description><![CDATA[

  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/METADATA/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/repository-metadata-${version}.xsd">
  <id>repository-metadata</id>
  <name>Metadata</name>
  <description><![CDATA[

  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/PLUGIN/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/plugin-${version}.xsd">
  <id>plugin</id>
  <name>PluginDescriptor</name>
  <description><![CDATA[

  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/2.0.0 https://codehaus-plexus.github.io/modello/xsd/modello-2.0.0.xsd"
  xml.namespace="http://maven.apache.org/SETTINGS/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/settings-${version}.xsd">
  <id>settings</id>
  <name>Settings</name>
  <description>
    <![CDATA[
    <p>This is a reference for the user-specific configuration for Maven.</p>