*/
package org.apache.maven.api.services;

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Version
     */
    enum Version {

    // Setting a security manager causes the common ForkJoinPool to use InnocuousThreads with no
    // permissions.
    // submit()/join() causes this thread to execute the task instead, so we use a CountDownLatch as
    // a barrier to synchronize.
    // TODO(cpovirk): If some other test already initialized commonPool(), this won't work :(
    // Maybe we should just run this test in its own VM.
    ForkJoinPool.commonPool()
        .execute(

    graph.putEdgeValue(3, 4, "B");
    graph.putEdgeValue(5, 6, "C");

    int threadCount = 20;
    ExecutorService executor = newFixedThreadPool(threadCount);
    final CyclicBarrier barrier = new CyclicBarrier(threadCount);
    ImmutableList.Builder<Future<?>> futures = ImmutableList.builder();
    for (int i = 0; i < threadCount; i++) {
      futures.add(
          executor.submit(

import org.apache.maven.api.services.ModelProblem;

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public class DefaultModelProblem implements ModelProblem {

    private final String source;

    private final int lineNumber;

 *   <li>Capture a generic type with a (usually anonymous) subclass. For example:
 *       <pre>{@code
 * new TypeToken<List<String>>() {}
 * }</pre>
 *       <p>Note that it's critical that the actual type argument is carried by a subclass. The
 *       following code is wrong because it only captures the {@code <T>} type variable of the
 *       {@code listType()} method signature; while {@code <String>} is lost in erasure:
 *       <pre>{@code