<system>GitHub Issues</system>
    <url>https://github.com/google/guava/issues</url>
  </issueManagement>

  <properties>
    <central-publishing-maven-plugin.version>0.10.0</central-publishing-maven-plugin.version>
    <maven-gpg-plugin.version>3.0.1</maven-gpg-plugin.version>
  </properties>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>com.google.guava</groupId>

        assertEquals("plugin", artifact.getName());
        assertEquals("1", artifact.getVersion());
    }

    @Test
    public void test_getArtifactFromFileName_noVersion() {
        Artifact artifact = pluginHelper.getArtifactFromFileName(ArtifactType.DATA_STORE, "plugin.jar");
        assertEquals("plugin", artifact.getName());

import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.MojoNotFoundException;
import org.apache.maven.plugin.PluginDescriptorParsingException;
import org.apache.maven.plugin.PluginManagerException;
import org.apache.maven.plugin.PluginNotFoundException;

                new PluginUpgradeInfo(DEFAULT_MAVEN_PLUGIN_GROUP_ID, "maven-enforcer-plugin", "3.0.0"));
        upgrades.put(
                "org.codehaus.mojo:flatten-maven-plugin",
                new PluginUpgradeInfo("org.codehaus.mojo", "flatten-maven-plugin", "1.2.7"));
        upgrades.put(
                DEFAULT_MAVEN_PLUGIN_GROUP_ID + ":maven-shade-plugin",

              <includes>org/jline/nativ/**</includes>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.codehaus.modello</groupId>
        <artifactId>modello-maven-plugin</artifactId>
        <configuration>
          <version>1.2.0</version>
          <models>

        Throwable level1 = new RuntimeException("Runtime error", level2);
        PluginException exception = new PluginException("Plugin failure", level1);

        // Verify the complete chain
        assertEquals("Plugin failure", exception.getMessage());
        assertEquals(level1, exception.getCause());
        assertEquals("Runtime error", exception.getCause().getMessage());

                                                newPlugin("maven-compiler-plugin", "compile", "testCompile"),
                                                newPlugin("maven-resources-plugin", "resources", "testResources"),
                                                newPlugin("maven-surefire-plugin", "test"),
                                                newPlugin("maven-jar-plugin", "jar"),

        }
    }

    private Plugin findPlugin(String groupId, String artifactId, Collection<Plugin> plugins) {
        for (Plugin plugin : plugins) {
            if (artifactId.equals(plugin.getArtifactId()) && groupId.equals(plugin.getGroupId())) {
                return plugin;
            }
        }

        return null;
    }

                + "    <plugins>\n"
                + "      <plugin>\n"
                + "         <m:configuration xmlns:m=\"http://maven.apache.org/POM/4.0.0\" xmlns=\"http://fabric8.io/fabric8-maven-plugin\">\n"
                + "             <myConfig>foo</myConfig>\n"
                + "         </m:configuration>\n"
                + "      </plugin>\n"
                + "    </plugins>\n"
                + "  </build>\n"

            List<Plugin> plugins,
            String prefix,
            String prefix2,
            ModelBuildingRequest request) {
        Severity errOn31 = getSeverity(request, ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_3_1);

        Map<String, Plugin> index = new HashMap<>();

        for (Plugin plugin : plugins) {
            if (plugin.getGroupId() == null