* default} methods. Specifically, it forwards calls only for methods that existed <a
 * href="https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentMap.html">before
 * {@code default} methods were introduced</a>. For newer methods, like {@code forEach}, it inherits
 * their default implementations. When those implementations invoke methods, they invoke methods on
 * the {@code ForwardingConcurrentMap}.
 *
 * @author Charles Fry

            if (cycle != null) {
                // remove edge which introduced cycle
                throw new CycleDetectedException(
                        "Edge between '" + from + "' and '" + to + "' introduces to cycle in the graph", cycle);
            }
        }
    }

    private enum DfsState {
        VISITING,
        VISITED
    }

 * default} methods. Specifically, it forwards calls only for methods that existed <a
 * href="https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentMap.html">before
 * {@code default} methods were introduced</a>. For newer methods, like {@code forEach}, it inherits
 * their default implementations. When those implementations invoke methods, they invoke methods on
 * the {@code ForwardingConcurrentMap}.
 *
 * @author Charles Fry

    exception, "Expected Android API level 21+ but was 29".


## Version 3.14.6

_2020-01-11_

 *  Fix: Don't crash if the connection is closed when sending a degraded ping. This fixes a
    regression that was introduced in OkHttp 3.14.5.


## Version 3.14.5

_2020-01-03_

 *  Fix: Degrade HTTP/2 connections after a timeout. When an HTTP/2 stream times out it may impact

                if (parents.contains(a.getDependencyConflictId())) {
                    a.setDependencyTrail(getDependencyTrail());

                    throw new CyclicDependencyException("A dependency has introduced a cycle", a);
                }

                children.add(new ResolutionNode(a, remoteRepositories, this));
            }
            children = Collections.unmodifiableList(children);
        } else {

 * Wise voices have suggested that maybe aggregators shouldn't be bound to the ordinary
 * lifecycle at all, in which case we wouldn't be needing this class at all ( and
 * ProjectBuildList.getByTaskSegments). Or maybe they should be introduced in the calculation
 * of the execution plan instead, which seems much nicer.
 * </p>
 * <p>
 * Additionally this class contains a clone of the MavenSession, which is *only* needed

  interpolation for file-based activation is limited to <<<$\{basedir}>>> (which was introduced in Maven 3 and is not deprecated
  in this context) and <<<$\{rootDirectory}>>> (introduced in Maven 4), system properties and user properties.

  Values are evaluated in sequence from different syntaxes:

*----+------+------+

   */
  public static final String CONTENT_SECURITY_POLICY_REPORT_ONLY =
      "Content-Security-Policy-Report-Only";

  /**
   * The HTTP nonstandard {@code X-Content-Security-Policy} header field name. It was introduced in
   * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the Firefox until
   * version 23 and the Internet Explorer version 10. Please, use {@link #CONTENT_SECURITY_POLICY}
   * to pass the CSP.

- Introduced a new declarative validation tag `+k8s:customUnique` to control listmap uniqueness. ([#134279](https://github.com/kubernetes/kubernetes/pull/134279), [@yongruilin](https://github.com/yongruilin)) [SIG API Machinery and Auth]

### Existing properties in existing classes

This is out of scope for this ADR.  Migrating an existing property to lazy types is being handled in a different way.

### Conventions

Once a new property has been introduced, you need to consider what its conventions will be.