Deque<NodeAndRemainingSuccessors<N>> stack = new ArrayDeque<>();
    stack.addLast(new NodeAndRemainingSuccessors<>(startNode));

    while (!stack.isEmpty()) {
      // To peek at the top two items, we need to temporarily remove one.
      NodeAndRemainingSuccessors<N> top = stack.removeLast();
      NodeAndRemainingSuccessors<N> prev = stack.peekLast();
      stack.addLast(top);

// https://www.iana.org/domains/root/db/secure.html
secure

// security : XYZ.COM LLC
// https://www.iana.org/domains/root/db/security.html
security

// seek : Seek Limited
// https://www.iana.org/domains/root/db/seek.html
seek

// select : Registry Services, LLC
// https://www.iana.org/domains/root/db/select.html
select

// sener : Sener Ingeniería y Sistemas, S.A.

        return Equivalence.equals();
      }
    },

    SOFT {
      @Override
      Equivalence<Object> defaultEquivalence() {
        return Equivalence.identity();
      }
    },

    WEAK {
      @Override
      Equivalence<Object> defaultEquivalence() {
        return Equivalence.identity();
      }
    };

    abstract Equivalence<Object> defaultEquivalence();
  }

  /**

      if (source.isEmpty()) {
        throw PermittedMetaException.NSEE;
      }

      destination.push(source.pop());
      stackWithLastReturnedElementAtTop = destination;
      return destination.peek();
    }

    private void throwIfInvalid(IteratorFeature methodFeature) {
      if (!features.contains(methodFeature)) {
        if (stackWithLastReturnedElementAtTop == null) {

                    } catch (ExecutionException expected) {
                    }
                    try {
                      peeker.getDone(nonInput);
                      fail("Peeker should not be able to peek into non-input ClosingFuture.");
                    } catch (IllegalArgumentException expected) {
                    }
                    capturedPeeker.set(peeker);
                    return closeable2;

   * the state transitions.
   */
  private static final class ServiceListener extends Service.Listener {
    final Service service;
    // We store the state in a weak reference to ensure that if something went wrong while
    // constructing the ServiceManager we don't pointlessly keep updating the state.
    final WeakReference<ServiceManagerState> state;

	public static final field EMPTY Lokhttp3/TrailersSource;
	public abstract fun get ()Lokhttp3/Headers;
	public fun peek ()Lokhttp3/Headers;
}

public final class okhttp3/TrailersSource$Companion {
}

public final class okhttp3/TrailersSource$DefaultImpls {
	public static fun peek (Lokhttp3/TrailersSource;)Lokhttp3/Headers;
}

public abstract interface class okhttp3/WebSocket {

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.primitives.Longs;
import com.google.errorprone.annotations.concurrent.GuardedBy;
import com.google.j2objc.annotations.Weak;
import java.time.Duration;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
import java.util.function.BooleanSupplier;

    return unmodifiableCollectionSubclass(createCollection());
  }

  /**
   * Creates the collection of values for a single key.
   *
   * <p>Collections with weak, soft, or phantom references are not supported. Each call to {@code
   * createCollection} should create a new instance.
   *
   * <p>The returned collection class determines whether duplicate key-value pairs are allowed.
   *

            } catch (e: IOException) {
              throw RuntimeException(e)
            }
          }
          return result
        }

        override fun peek(): MockResponse = queueDispatcher.peek()

        override fun close() {
          queueDispatcher.close()
        }
      }
    client =
      client
        .newBuilder()
        .proxy(server.proxyAddress)