* returns an {@code ImmutableSortedMultiset<Multiset<String>>} containing one element (the given
   * multiset itself).
   *
   * <p>Despite the method name, this method attempts to avoid actually copying the data when it is
   * safe to do so. The exact circumstances under which a copy will or will not be performed are
   * undocumented and subject to change.
   *

   * {@code ClassCastException} for any elements {@code e1} and {@code e2} in the multiset. If the
   * user attempts to add an element to the multiset that violates this constraint (for example, the
   * user attempts to add a string element to a set whose elements are integers), the {@code
   * add(Object)} call will throw a {@code ClassCastException}.
   *

| com.squareup.okhttp3:mockwebserver:5.0.0         | okhttp3.mockwebserver | Obsolete. Depends on JUnit 4.     |

**OkHttp now supports Happy Eyeballs ([RFC 8305][rfc_8305]) for IPv4+IPv6 networks.** It attempts
both IPv6 and IPv4 connections concurrently, keeping whichever connects first.

**We’ve improved our Kotlin APIs.** You can skip the builder:

```kotlin
val request = Request(

 */
public class IndexingHelper {
    /** Logger for this class */
    private static final Logger logger = LogManager.getLogger(IndexingHelper.class);

    /** Maximum number of retry attempts for failed operations */
    protected int maxRetryCount = 5;

    /** Default number of rows to process in a single batch */
    protected int defaultRowSize = 100;

    /**

    void testGetSubjectLoginFailuresCacheAndRefresh(SubjectVariant variant) throws Exception {
        JAASAuthenticator auth = buildAuthenticator(variant);

        // First call attempts a JAAS login; behavior depends on JAAS configuration
        Subject first = auth.getSubject();

        // Second call should return cached value (same as first)
        Subject second = auth.getSubject();

HTTPS
=====

OkHttp attempts to balance two competing concerns:

 * **Connectivity** to as many hosts as possible. That includes advanced hosts that run the latest versions of [boringssl](https://boringssl.googlesource.com/boringssl/) and less out of date hosts running older versions of [OpenSSL](https://www.openssl.org/).

  }

  fun idleConnectionCount(): Int =
    connections.count {
      it.withLock { it.calls.isEmpty() }
    }

  fun connectionCount(): Int = connections.size

  /**
   * Attempts to acquire a recycled connection to [address] for [call]. Returns the connection if it
   * was acquired, or null if no connection was acquired. The acquired connection will also be

   *
   * <p>The returned {@code Future} attempts to keep its cancellation state in sync with that of the
   * input future and that of the future returned by the chain function. That is, if the returned
   * {@code Future} is cancelled, it will attempt to cancel the other two, and if either of the
   * other two is cancelled, the returned {@code Future} will receive a callback in which it will
   * attempt to cancel itself.
   *

   * users with "read-only" access to internal tables. Query operations on the returned table "read
   * through" to the specified table, and attempts to modify the returned table, whether direct or
   * via its collection views, result in an {@code UnsupportedOperationException}.
   *
   * <p>The returned table will be serializable if the specified table is serializable.

          return tempDir;
        }
      }
      throw new IllegalStateException(
          "Failed to create directory within "
              + TEMP_DIR_ATTEMPTS
              + " attempts (tried "
              + baseName
              + "0 to "
              + baseName
              + (TEMP_DIR_ATTEMPTS - 1)
              + ')');
    }

    @Override