@VisibleForTesting long refreshDuration;
  @VisibleForTesting @CheckForNull TimeUnit refreshTimeUnit;
  /** Specification; used for toParseableString(). */
  private final String specification;

  private CacheBuilderSpec(String specification) {
    this.specification = specification;
  }

  /**
   * Creates a CacheBuilderSpec from a string.
   *
   * @param cacheBuilderSpecification the string form

   * please comment on <a href="https://github.com/google/guava/issues/3086">issue 3086</a>.
   */
  private static boolean isJdk9OrHigher() {
    return JAVA_SPECIFICATION_VERSION.value().startsWith("9")
        || JAVA_SPECIFICATION_VERSION.value().startsWith("10");
  }

   * @param key the value to be searched for.
   * @param comparator the comparator by which the list is ordered.
   * @param presentBehavior the specification for what to do if at least one element of the list
   *     compares as equal to the key.
   * @param absentBehavior the specification for what to do if no elements of the list compare as
   *     equal to the key.

  @VisibleForTesting long refreshDuration;
  @VisibleForTesting @CheckForNull TimeUnit refreshTimeUnit;
  /** Specification; used for toParseableString(). */
  private final String specification;

  private CacheBuilderSpec(String specification) {
    this.specification = specification;
  }

  /**
   * Creates a CacheBuilderSpec from a string.
   *
   * @param cacheBuilderSpecification the string form

            // MNG-5368: Log a message instead of returning 'null' silently.
            this.logger.error(
                    String.format(
                            "Invalid version specification '%s' creating dependency artifact '%s'.", d.getVersion(), d),
                    e);
            return null;
        }

        Artifact artifact = artifactFactory.createDependencyArtifact(

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.base.StandardSystemProperty.JAVA_SPECIFICATION_VERSION;
import static com.google.common.base.StandardSystemProperty.OS_NAME;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;

   * please comment on <a href="https://github.com/google/guava/issues/3086">issue 3086</a>.
   */
  private static boolean isJdk9OrHigher() {
    return JAVA_SPECIFICATION_VERSION.value().startsWith("9")
        || JAVA_SPECIFICATION_VERSION.value().startsWith("10");
  }

import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.WeakHashMap;

import org.apache.maven.artifact.Artifact;

/**
 * Construct a version range from a specification.
 *
 */
public class VersionRange {
    private static final Map<String, VersionRange> CACHE_SPEC = Collections.synchronizedMap(new WeakHashMap<>());

   * {@code ExecutorService} imposes a small locking overhead on each task submission in order to
   * implement shutdown and termination behavior.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing

     * @see org.apache.maven.api.services.VersionParser#parseVersion(String)
     */
    @Nonnull
    Version parseVersion(@Nonnull String version);

    /**
     * Parses the specified version range specification, for example "[1.0,2.0)".
     * <p>
     * Shortcut for {@code getService(VersionParser.class).parseVersionRange(...)}.
     *
     * @param versionRange the version string to parse