* that would be a problem because it violates small-test rules. Note that we strip the
   * suppression externally, but it's OK because we don't enforce test-size rules there.)
   *
   * We'd just use PackageSanityTests directly, saving us from needing this separate type, but we're
   * currently skipping MediumTests on Android, and we skip them by not making them present at

ACCEPTED

## Consequences

- Assign ownership of each architecture module to one team.
- Assign each source file to one architecture module.
- Align the source tree layout with this architecture.

    private static final MonotonicClock CLOCK = new MonotonicClock();

    private final long startNanos;
    private final Instant startInstant;

    /**
     * Private constructor to enforce singleton pattern.
     * Initializes the clock with the current system time and nanoTime.
     */
    private MonotonicClock() {
        this.startNanos = System.nanoTime();

          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-enforcer-plugin</artifactId>
            <version>1.0-alpha-3</version>
            <executions>
              <execution>
                <id>enforce-jdk-15</id>
                <goals>
                  <goal>enforce</goal>
                </goals>
                <configuration>
                  <rules>

         * remotely resolved snapshot artifact gets passed into pathOf(). So producing a proper local artifact path
         * using DefaultRepositoryLayout requires us to enforce usage of the artifact's base version. This
         * transformation however contradicts the other use case of precisely obeying the repository's layout. The below

        </excludes>
      </testResource>
    </testResources>
    <plugins>
      <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
        <executions>
          <execution>
            <id>enforce-versions</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>

        </excludes>
      </testResource>
    </testResources>
    <plugins>
      <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
        <executions>
          <execution>
            <id>enforce-versions</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireMavenVersion>

  }

  @Override
  protected Map<Class<? extends @NonNull B>, B> delegate() {
    return delegate;
  }

  /**
   * Wraps the {@code setValue} implementation of an {@code Entry} to enforce the class constraint.
   */
  private static <B extends @Nullable Object> Entry<Class<? extends @NonNull B>, B> checkedEntry(
      Entry<Class<? extends @NonNull B>, B> entry) {

   * ({@code this}) will be cancelled and interrupted.
   *
   * @param timeout when to time out the future
   * @param scheduledExecutor The executor service to enforce the timeout.
   * @since 33.4.0 (but since 28.0 in the JRE flavor)
   */
  @J2ktIncompatible
  @GwtIncompatible // ScheduledExecutorService

            // the default must become the current project of the thread that clones this
            MavenProject current = getCurrentProject();
            // we replace the thread local of the clone to prevent write through and enforce the new default value
            clone.currentProject = ThreadLocal.withInitial(() -> current);
            return clone;
        } catch (CloneNotSupportedException e) {
            throw new RuntimeException("Bug", e);