import java.lang.annotation.Target;

/**
 * The {@code ThreadSafe} annotation can be used to indicate a given type
 * is thread safe.  {@link Immutable} objects are automatically thread safe.
 *
 * @see Immutable
 * @see NotThreadSafe
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.TYPE)

 * none of its field can be changed.  This also ensures that the type is
 * {@link ThreadSafe}.
 *
 * @see ThreadSafe
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.CLASS)
@ThreadSafe
@Target(ElementType.TYPE)

 * or extended by Maven plugins or extensions and consumed by Maven itself.</li>
 * <li>{@link ThreadSafe}: Implies that implementations of this interface must
 * be safe to invoke from multiple threads concurrently.</li>
 * </ul>
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
@ThreadSafe
public interface Mojo {
    /**

import org.apache.maven.api.annotations.ThreadSafe;

/**
 * Marker interface for all services provided by the {@link Session}.
 * <p>
 * Services can be retrieved from the session using the
 * {@link Session#getService(Class)} method.
 *
 * @since 4.0.0
 * @see Session#getService(Class)
 */
@Experimental
@ThreadSafe

import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * This annotation indicates that the annotated type is <strong>not</strong> threadsafe
 * and should only be used by a single thread.
 *
 * @see ThreadSafe
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.TYPE)

          <role-hint>jar</role-hint>
          <field-name>jarArchiver</field-name>
        </requirement>
      </requirements>
    </mojo>
    <mojo>
      <goal>war</goal>
      <threadSafe>true</threadSafe>
    </mojo>
  </mojos>
  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-plugin-api</artifactId>
      <type>jar</type>
      <version>2.0.6</version>

import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;
import org.apache.maven.api.annotations.ThreadSafe;

import static java.util.Objects.requireNonNull;

/**
 * The proto session, material used to create {@link Session}.
 *
 * @since 4.0.0
 */
@Experimental
@ThreadSafe
public interface ProtoSession {

    /**

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin;

import org.apache.maven.api.annotations.ThreadSafe;
import org.apache.maven.plugin.logging.Log;

/**
 * This interface forms the contract required for <code>Mojos</code> to interact with the <code>Maven</code>
 * infrastructure.<br>

        msgs.add("* Your build is requesting parallel execution, but project      *");
        msgs.add("* contains the following plugin(s) that have goals not marked   *");
        msgs.add("* as @threadSafe to support parallel building.                  *");
        msgs.add("* While this /may/ work fine, please look for plugin updates    *");
        msgs.add("* and/or request plugins be made thread-safe.                   *");

            result.add(executionPlanItem.getMojoExecution());
        }
        return result;
    }

    /**
     * Get set of plugins having a goal/mojo used but not marked @threadSafe
     *
     * @return the set of plugins (without info on which goal is concerned)
     */
    public Set<Plugin> getNonThreadSafePlugins() {
        Set<Plugin> plugins = new HashSet<>();