<artifactId>maven-compiler-plugin</artifactId>
    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>resources</prefix>
      <artifactId>maven-resources-plugin</artifactId>
    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>plugin</prefix>
      <artifactId>maven-plugin-plugin</artifactId>
    </plugin>
  </plugins>

		// TODO: fail and return here once alpha only tests can set the feature flags for a plugin correctly
	}

	// Skip appending the in-tree plugin to the list of plugins to be probed/initialized
	// if the plugin unregister feature flag is set
	if featureGate.Enabled(pluginInfo.pluginUnregisterFeature) {
		logger.Info("Skip registration of plugin since feature flag is enabled", "plugin", inTreePluginName, "feature", pluginInfo.pluginUnregisterFeature)

        buildFile("""
            plugins {
                id("test-convention-plugin")
            }
        """)

        executer.noDeprecationChecks()

        when:
        configurationCacheFails(":help")

        then:
        failure.assertOutputContains("Hello")
        problems.assertFailureHasProblems(failure) {
            withProblem("Plugin 'test-convention-plugin': external process started")
        }

        if (build != null) {
            List<Plugin> plugins = build.getPlugins();
            Map<Object, Plugin> normalized = new LinkedHashMap<>(plugins.size() * 2);

            for (Plugin plugin : plugins) {
                Object key = plugin.getKey();
                Plugin first = normalized.get(key);
                if (first != null) {
                    plugin = merger.mergePlugin(plugin, first);
                }

import org.gradle.internal.lazy.Lazy;
import org.gradle.plugin.management.internal.PluginRequestInternal;
import org.gradle.plugin.use.PluginId;
import org.gradle.plugin.use.resolve.internal.PluginResolution;
import org.gradle.plugin.use.resolve.internal.PluginResolutionResult;
import org.gradle.plugin.use.resolve.internal.PluginResolutionVisitor;
import org.gradle.plugin.use.resolve.internal.PluginResolver;

import java.io.File;

import org.gradle.api.*;
import org.gradle.api.internal.plugins.DslObject;

public class CustomPlugin implements Plugin<Project> {
    public void apply(Project p) {
      new DslObject(p).getExtensions().getExtraProperties().set("prop", "value");
    }
}
'''
        builder.resourceFile('META-INF/gradle-plugins/custom.properties') << '''
implementation-class=CustomPlugin
'''

            class SomePlugin implements Plugin<Project> {
                void apply(Project p) {
                    p.apply plugin: 'java'
                    p.apply plugin: 'idea'

                    // Verify can use the types with and without various type declarations

                    JavaPluginConvention c = p.convention.plugins.java
                    c.sourceCompatibility = 1.8

                        .dependencies(deps)
                        .build();

                plugins.put(key, plugin);
            }
        }
    }

    private static String getExecutionId(Plugin plugin, String goal) {
        Set<String> existingIds = plugin != null
                ? plugin.getExecutions().stream().map(PluginExecution::getId).collect(Collectors.toSet())
                : Set.of();

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <plugins>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>it</prefix>
      <artifactId>maven-it-plugin</artifactId>
    </plugin>
  </plugins>

		// TODO: fail and return here once alpha only tests can set the feature flags for a plugin correctly
	}

	// Skip appending the in-tree plugin to the list of plugins to be probed/initialized
	// if the plugin unregister feature flag is set
	if featureGate.Enabled(pluginInfo.pluginUnregisterFeature) {