import java.util.SortedSet;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A skeleton implementation of a descending multiset. Only needs {@code forwardMultiset()} and
 * {@code entryIterator()}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

    /**
     * Gets the installation Toolchains source.
     *
     * @return the installation Toolchains source or {@code null} if none
     */
    @Nonnull
    Optional<Source> getInstallationToolchainsSource();

    /**
     * Gets the user Toolchains source.
     *
     * @return the user Toolchains source or {@code null} if none
     */
    @Nonnull
    Optional<Source> getUserToolchainsSource();

    @Nonnull

10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
      If You choose to distribute Source Code Form that is Incompatible With
      Secondary Licenses under the terms of this version of the License, the
      notice described in Exhibit B of this License must be attached.

Exhibit A - Source Code Form License Notice

      This Source Code Form is subject to the

import static com.google.common.math.MathPreconditions.checkRoundingUnnecessary;

import com.google.common.annotations.GwtIncompatible;
import java.math.RoundingMode;

/**
 * Helper type to implement rounding {@code X} to a representable {@code double} value according to
 * a {@link RoundingMode}.
 */
@GwtIncompatible
@ElementTypesAreNonnullByDefault
abstract class ToDoubleRounder<X extends Number & Comparable<X>> {
  /**

    Request request = new Request.Builder()
            .url(url)
            .build();
    try (Response response = client.newCall(request).execute()) {
      assertTrue(response.code() == 200 || response.code() == 404);
      assertEquals(Protocol.HTTP_2, response.protocol());

      for (Certificate c: response.handshake().peerCertificates()) {
        X509Certificate x = (X509Certificate) c;

     * Checks if the underlying output does support styling or not.
     * @return whether color styling is supported or not
     */
    boolean isColorEnabled();

    /**
     * Returns the terminal width or <code>-1</code> if not supported.
     * @return the terminal width
     */
    int getTerminalWidth();

    /**
     * Creates a new message builder.
     * @return a new message builder
     */
    @Nonnull

     * modifications don't affect future retrievals of the super POM.
     *
     * @param version The model version to retrieve the super POM for (e.g. "4.0.0"), must not be {@code null}.
     * @return The super POM, never {@code null}.
     */
    Model getSuperModel(String version);

import org.apache.maven.api.plugin.descriptor.MojoDescriptor;
import org.apache.maven.api.xml.XmlNode;

/**
 * A {@code MojoExecution} represents a single execution of a Maven Plugin during a given build.
 * An instance of this object is bound to the {@link org.apache.maven.api.di.MojoExecutionScoped}
 * and available as {@code mojoExecution} within {@link org.apache.maven.api.plugin.annotations.Parameter}
 * expressions.
 *
 * @since 4.0.0
 */

 *   <li>If you override {@link #setUp} or {@link #tearDown}, make sure to invoke {@code
 *       super.setUp} and {@code super.tearDown} within them. These methods are used to clear and
 *       check for thread assertion failures.
 *   <li>All delays and timeouts must use one of the constants {@code SHORT_DELAY_MS}, {@code
 *       SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS}, {@code LONG_DELAY_MS}. The idea here is that a

import com.google.caliper.Benchmark;
import com.google.caliper.Param;
import com.google.common.collect.BenchmarkHelpers.SetImpl;

/**
 * This is meant to be used with {@code --measureMemory} to measure the memory usage of various
 * {@code Set} implementations.
 *
 * @author Christopher Swenson
 */
public class SetCreationBenchmark {
  @Param({