List<Plugin> plugins = getMetadata().getPlugins();
        boolean found = false;
        for (Iterator<Plugin> i = plugins.iterator(); i.hasNext() && !found; ) {
            Plugin plugin = i.next();
            if (plugin.getPrefix().equals(goalPrefix)) {
                found = true;
            }
        }
        if (!found) {
            Plugin plugin = new Plugin();

// See the License for the specific language governing permissions and
// limitations under the License.

// This tests the k8s installation.  It validates the CNI plugin configuration
// and the existence of the CNI plugin binary locations.
package install_test

import (
	"testing"

	install "istio.io/istio/cni/test"
	"istio.io/istio/pkg/test/env"
)

type testCase struct {

      <version>1.0</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-antrun-plugin</artifactId>
        <configuration>
          <tasks><echo>${project.parent.basedir}</echo></tasks>
        </configuration>
      </plugin>
    </plugins>
  </build>

    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-xml</artifactId>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.codehaus.modello</groupId>
        <artifactId>modello-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>velocity</id>
            <goals>
              <goal>velocity</goal>
            </goals>

  if (project.name == "android-test-app") return@subprojects
  if (project.name == "container-tests") return@subprojects

  apply(plugin = "checkstyle")
  apply(plugin = "ru.vyarus.animalsniffer")
  apply(plugin = "biz.aQute.bnd.builder")
  apply(plugin = "io.github.usefulness.maven-sympathy")

  tasks.withType<JavaCompile> {
    options.encoding = Charsets.UTF_8.toString()
  }

                <param>packageModelV4=org.apache.maven.api.plugin.descriptor</param>
                <param>packageToolV4=org.apache.maven.plugin.descriptor.io</param>
              </params>
              <models>
                <model>../../api/maven-api-plugin/src/main/mdo/plugin.mdo</model>
              </models>
              <version>2.0.0</version>

For external plugins, it's difficult for an object to be used outside the application of a plugin, so following best practices is relatively straightforward.  For core plugins in gradle/gradle, it's easy for an object to be created without applying its associated plugin. For instance, Spring has a plugin that uses the Checkstyle task directly without applying the Checkstyle plugin.

	</properties>
	<build>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.13.0</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<plugin>
				<artifactId>maven-source-plugin</artifactId>
				<version>3.2.1</version>
				<executions>

	</properties>
	<build>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.12.1</version>
				<configuration>
					<encoding>UTF-8</encoding>
					<release>17</release>
				</configuration>
			</plugin>
			<plugin>
				<artifactId>maven-source-plugin</artifactId>
				<version>3.2.1</version>
				<executions>
					<execution>

 */
package org.codelibs.fess.app.web.api.admin.plugin;

import static org.codelibs.fess.app.web.admin.plugin.AdminPluginAction.deleteArtifact;
import static org.codelibs.fess.app.web.admin.plugin.AdminPluginAction.getAllAvailableArtifacts;
import static org.codelibs.fess.app.web.admin.plugin.AdminPluginAction.getAllInstalledArtifacts;
import static org.codelibs.fess.app.web.admin.plugin.AdminPluginAction.installArtifact;

import java.util.List;