* Level#SEVERE} message indicating the potential deadlock, which includes stack traces
     * illustrating the cycle in lock acquisition order.
     */
    WARN {
      @Override
      public void handlePotentialDeadlock(PotentialDeadlockException e) {
        logger.get().log(Level.SEVERE, "Detected potential deadlock", e);
      }
    },

    /**

import static java.lang.System.identityHashCode;
import static java.util.Objects.requireNonNull;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.logging.Level.SEVERE;

import com.google.common.annotations.GwtCompatible;
import com.google.common.base.Strings;
import com.google.common.util.concurrent.internal.InternalFutureFailureAccess;

 *
 *  * When an entry is being **edited**, it is not necessary to supply data for every value; values
 *    default to their previous value.
 *
 * Every [edit] call must be matched by a call to [Editor.commit] or [Editor.abort]. Committing is
 * atomic: a read observes the full set of values as they were before or after the commit, but never
 * a mix of values.
 *

    is used by servers to defend against Cross-Site Request Forgery (CSRF) attacks.

 *  New: Log the total time of the HTTP call in `HttpLoggingInterceptor`.

 *  New: `OkHttpClient.Builder` now has APIs that use `kotlin.time.Duration`.

 *  New: `mockwebserver3.SocketPolicy` is now a sealed interface. This is one of several

          joinUninterruptibly(interruptingThread, 2500, MILLISECONDS);
          Thread.interrupted();
          if (interruptingThread.isAlive()) {
            // This will be hidden by test-output redirection:
            logger.severe("InterruptenatorTask did not exit; future tests may be affected");
            /*
             * This fail() helps as long as TearDownAccepter is a TearDownStack that was *not*
             * configured with suppressThrows=true.

          joinUninterruptibly(interruptingThread, 2500, MILLISECONDS);
          Thread.interrupted();
          if (interruptingThread.isAlive()) {
            // This will be hidden by test-output redirection:
            logger.severe("InterruptenatorTask did not exit; future tests may be affected");
            /*
             * This fail() helps as long as TearDownAccepter is a TearDownStack that was *not*
             * configured with suppressThrows=true.

            final String content = response.getContentAsString();
            logger.info(content);
            assertTrue(content.length() > 0);
        }, e -> {
            logger.log(Level.SEVERE, "error", e);
            fail();
        });
    }

    @Test
    public void test_GetFactoryMethod() {
        // ## Arrange ##
        final String url = "http://example.com";

        // ## Act ##

    // incomplete.
    val creator = cache.edit("k1")!!
    creator.newSink(0).buffer().use {
      it.writeUtf8("Hello")
    }

    // Simulate a severe Filesystem failure on the first initialization.
    filesystem.setFaultyDelete(cacheDir / "k1.0.tmp", true)
    filesystem.setFaultyDelete(cacheDir, true)
    cache =

       */
      return false;
    }

    try {
      finalizeReferentMethod.invoke(reference);
    } catch (Throwable t) {
      logger.log(Level.SEVERE, "Error cleaning up after reference.", t);
    }
    return true;
  }

  /** Looks up FinalizableReference.finalizeReferent() method. */
  private @Nullable Method getFinalizeReferentMethod() {

      // we're given a bad one. We only catch Exception because we want Errors to propagate up.
      log.get()
          .log(
              Level.SEVERE,
              "RuntimeException while executing runnable "
                  + runnable
                  + " with executor "
                  + executor,
              e);
    }
  }