*         .addEdge(LONDON, BRUSSELS, Eurostar.trainNumber("4444"))
   *         .addNode(REYKJAVIK)
   *         .build();
   * }</pre>
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple networks in series. Each new network contains all the elements of the ones created
   * before it.
   *
   * @since 28.0
   */

        return session.getService(ProjectBuilder.class)
                .build(ProjectBuilderRequest.builder()
                        .session(session)
                        .path(session.getPathForLocalArtifact(artifact))
                        .processPlugins(false)
                        .build())
                .getProject()
                .get();
    }

    @Test

     * not allowed, and will cause {@link #build} to fail.
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> put(K key, V value) {
      super.put(key, value);
      return this;
    }

    /**
     * Adds the given {@code entry} to the bimap. Duplicate keys or values are not allowed, and will
     * cause {@link #build} to fail.
     *
     * @since 19.0
     */

     * @see #collect(DependencyCollectorRequest)
     */
    @Nonnull
    default DependencyCollectorResult collect(@Nonnull Session session, @Nonnull DependencyCoordinate root) {
        return collect(DependencyCollectorRequest.build(session, root));
    }

    /**
     * Collects the transitive dependencies of some artifacts and builds a dependency graph. Note that this operation is

        .socketFactory(new UnixDomainSocketFactory(socketFile))
        .protocols(Collections.singletonList(Protocol.H2_PRIOR_KNOWLEDGE))
        .build();

    Request request = new Request.Builder()
        .url("http://publicobject.com/helloworld.txt")
        .build();

    try (Response response = client.newCall(request).execute()) {
      System.out.println(response.body().string());
    }

    server.shutdown();

 */
@Named
public class DefaultToolchainsBuilder implements ToolchainsBuilder {

    private final MavenToolchainsMerger toolchainsMerger = new MavenToolchainsMerger();

    @Override
    public ToolchainsBuilderResult build(ToolchainsBuilderRequest request) throws ToolchainsBuilderException {
        List<BuilderProblem> problems = new ArrayList<>();

        Source globalSource = request.getGlobalToolchainsSource().orElse(null);

      }
    }

    // Build the content escaper first and then add quote escaping for the
    // general escaper.
    builder.addEscape('&', "&");
    builder.addEscape('<', "&lt;");
    builder.addEscape('>', "&gt;");
    XML_CONTENT_ESCAPER = builder.build();
    builder.addEscape('\'', "&apos;");
    builder.addEscape('"', "&quot;");
    XML_ESCAPER = builder.build();
    builder.addEscape('\t', "&#x9;");

    INTEGRAL_DOUBLE_CANDIDATES = integralBuilder.build();
    fractionalBuilder.add(1.414).add(1.415).add(Math.sqrt(2));
    fractionalBuilder.add(5.656).add(5.657).add(4 * Math.sqrt(2));
    for (double d : INTEGRAL_DOUBLE_CANDIDATES) {
      double x = 1 / d;
      if (x != Math.rint(x)) {
        fractionalBuilder.add(x);
      }
    }
    FRACTIONAL_DOUBLE_CANDIDATES = fractionalBuilder.build();
    FINITE_DOUBLE_CANDIDATES =

 * infrastructure.<br>
 * It features an <code>execute()</code> method, which triggers the Mojo's build-process behavior, and can throw
 * a MojoException if error conditions occur.<br>
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
public interface Mojo {
    /**
     * Perform whatever build-process behavior this <code>Mojo</code> implements.<br>

    builder.weigher(constantWeigher(42)).build(CacheLoader.from(Suppliers.ofInstance(null)));
  }

  @SuppressWarnings("ReturnValueIgnored")
  public void testMaximumWeight_withoutWeigher() {
    CacheBuilder<Object, Object> builder = CacheBuilder.from(parse("maximumWeight=9000"));
    assertThrows(
        IllegalStateException.class,
        () -> builder.build(CacheLoader.from(Suppliers.ofInstance(null))));
  }