package org.apache.maven.api.services;

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

/**
 * 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 {

    /**

    }

    /**
     * Executes the crawler process in a separate JVM.
     * This method constructs the command line arguments, sets up the classpath,
     * and launches the crawler as an external process. It handles process lifecycle,
     * monitors output, and ensures proper cleanup.
     *
     * @throws JobProcessingException if the crawler process fails or times out
     */
    protected void executeCrawler() {

            restrictions.add(restriction);
            upperBound = restriction.getUpperBound();

            process = process.substring(index + 1).trim();

            if (process.startsWith(",")) {
                process = process.substring(1).trim();
            }
        }

        if (!process.isEmpty()) {
            if (!restrictions.isEmpty()) {
                throw new InvalidVersionSpecificationException(

public class AbstractListTester<E extends @Nullable Object> extends AbstractCollectionTester<E> {
  /*
   * Previously we had a field named list that was initialized to the value of
   * collection in setUp(), but that caused problems when a tester changed the
   * value of list or collection but not both.
   */
  protected final List<E> getList() {
    return (List<E>) collection;
  }

  /**
   * {@inheritDoc}
   *

 5. It sends the HTTP request and reads the response.

        /** The process to monitor and destroy. */
        private final Process p;

        /** The input stream thread reading process output. */
        private final InputStreamThread ist;

        /** Flag indicating if the destroyer has been executed. */
        private final AtomicBoolean executed = new AtomicBoolean(false);

        /** Timeout for process destruction in milliseconds. */

     * @param severity The severity level of the problem, may be {@code null} to default to
     *            {@link org.apache.maven.building.Problem.Severity#ERROR}.
     * @param source A hint about the source of the problem like a file path, may be {@code null}.
     * @param lineNumber The one-based index of the line containing the problem or {@code -1} if unknown.

        }
    }

    /**
     * Monitor thread that handles process timeout and termination.
     * This thread sleeps for the specified timeout duration and terminates the process if it hasn't finished.
     */
    protected static class MonitorThread extends Thread {
        /** The process to monitor. */
        private final Process process;

        /** The timeout duration in milliseconds. */

```

////

//// tab | Python 3.8+

```Python hl_lines="1  4"
{!> ../../docs_src/python_types/tutorial008.py!}
```

////

Das bedeutet:

* Die Variable `prices` ist ein `dict`:
    * Die Schlüssel dieses `dict` sind vom Typ `str` (z. B. die Namen der einzelnen Artikel).
    * Die Werte dieses `dict` sind vom Typ `float` (z. B. der Preis jedes Artikels).

 * They are created when <dfn>resolving</dfn> a {@code DependencyCoordinates}.
 * Resolving is the process that clarifies the obligation (optional or mandatory),
 * selects a particular version, and downloads the artifact into the local repository.</p>
 *
 * <p>{@link org.apache.maven.api.Node} is the main output of the <dfn>dependency collection</dfn> process.