*/
package org.gradle.api.plugins;

import org.gradle.api.InvalidUserDataException;

/**
 * A {@code UnknownPluginException} is thrown when an unknown plugin id is provided. 
 */
public class UnknownPluginException extends InvalidUserDataException {
    public UnknownPluginException(String message) {
        super(message);
    }

        if (plugin == null) {
            throw new UnknownPluginException("Plugin with id " + id + " has not been used.");
        }
        return plugin;
    }

    @Override
    public Plugin getAt(String id) throws UnknownPluginException {
        return getPlugin(id);
    }

    @Override
    public <P extends Plugin> P getAt(Class<P> type) throws UnknownPluginException {
        return getPlugin(type);
    }

     *
     * @param id The id of the plugin
     * @throws UnknownPluginException When there is no plugin with the given id.
     */
    Plugin getPlugin(String id) throws UnknownPluginException;

    /**
     * Returns a plugin with the specified type if this plugin has been used in the project.
     *
     * @param type The type of the plugin
     * @throws UnknownPluginException When there is no plugin with the given type.
     */

        when:
        container.getPlugin("unknown")

        then:
        thrown(UnknownPluginException)
    }

    def "fails when getting plugin of unknown type"() {
        when:
        container.getPlugin(plugin1Class)

        then:
        thrown(UnknownPluginException)
    }

    def "executes action for plugin with given id"() {
        def plugins = []

import org.gradle.api.internal.plugins.PluginManagerInternal;
import org.gradle.api.internal.plugins.PluginRegistry;
import org.gradle.api.plugins.InvalidPluginException;
import org.gradle.api.plugins.UnknownPluginException;
import org.gradle.internal.event.ListenerManager;
import org.gradle.internal.exceptions.LocationAwareException;
import org.gradle.plugin.management.internal.PluginRequestInternal;

 * limitations under the License.
 */

package org.gradle.plugin.devel.variants

import org.gradle.api.JavaVersion
import org.gradle.api.plugins.UnknownPluginException
import org.gradle.integtests.fixtures.AbstractIntegrationSpec
import org.gradle.internal.component.resolution.failure.exception.VariantSelectionException
import org.gradle.test.precondition.Requires

 * limitations under the License.
 */

package org.gradle.plugin.use.resolve.internal;

import com.google.common.collect.ImmutableList;
import org.gradle.api.plugins.UnknownPluginException;
import org.gradle.internal.exceptions.LocationAwareException;
import org.gradle.plugin.management.internal.PluginRequestInternal;
import org.gradle.util.internal.TextUtil;

import javax.annotation.Nullable;

import org.gradle.api.plugins.InvalidPluginException;
import org.gradle.api.plugins.PluginContainer;
import org.gradle.api.plugins.PluginInstantiationException;
import org.gradle.api.plugins.UnknownPluginException;
import org.gradle.api.reflect.ObjectInstantiationException;
import org.gradle.configuration.ConfigurationTargetIdentifier;
import org.gradle.internal.Cast;
import org.gradle.internal.code.DefaultUserCodeSource;