double estimateCompressionRatio(byte[] data, int algorithm);

    /**
     * Gets the minimum data size threshold for compression.
     * Data smaller than this threshold should not be compressed.
     *
     * @return minimum size in bytes for compression to be beneficial
     */
    int getMinCompressionSize();

    /**
     * Gets the maximum data size that can be compressed in a single operation.
     *

[okio_3_2_0]: https://square.github.io/okio/changelog/#version-320
[okio_3_7_0]: https://square.github.io/okio/changelog/#version-370
[okio_3_9_0]: https://square.github.io/okio/changelog/#version-390
[rfc_8305]: https://tools.ietf.org/html/rfc8305
[startup_1_2_0]: https://developer.android.com/jetpack/androidx/releases/startup#1.2.0
[uts46]: https://www.unicode.org/reports/tr46

    LockFreeBitArray(long bits) {
      checkArgument(bits > 0, "data length is zero!");
      // Avoid delegating to this(long[]), since AtomicLongArray(long[]) will clone its input and
      // thus double memory usage.
      this.data =
          new AtomicLongArray(Ints.checkedCast(LongMath.divide(bits, 64, RoundingMode.CEILING)));
      this.bitCount = LongAddables.create();
    }

    // Used by serialization

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.primitives.Ints;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.Serializable;
import java.math.BigInteger;
import java.util.NoSuchElementException;
import org.jspecify.annotations.Nullable;

/**

import com.google.common.primitives.Ints;
import org.jspecify.annotations.Nullable;

/**
 * Static methods for implementing hash-based collections.
 *
 * @author Kevin Bourrillion
 * @author Jesse Wilson
 * @author Austin Appleby
 */
@GwtCompatible
final class Hashing {
  private Hashing() {}

  /*
   * These should be ints, but we need to use longs to force GWT to do the multiplications with

    /**
     * Sets the filter configuration for WebLogic compatibility.
     * @param f the filter configuration to set
     */
    public void setFilterConfig(final FilterConfig f) {
        try {
            init(f);
        } catch (final Exception e) {
            log.error("Error setting filter config", e);
        }
    }

    /**
     * Gets the filter configuration.

   * instance. This method is guaranteed to only be called once.
   *
   * <p>By default this returns a new {@link ScheduledExecutorService} with a single thread pool
   * that sets the name of the thread to the {@linkplain #serviceName() service name}. Also, the
   * pool will be {@linkplain ScheduledExecutorService#shutdown() shut down} when the service

      return this;
    }

    /**
     * Specifies the ordering of the generated multimap's values for each key.
     *
     * <p>If this method is called, the sets returned by the {@code get()} method of the generated
     * multimap and its {@link Multimap#asMap()} view are {@link ImmutableSortedSet} instances.
     * However, serialization does not preserve that property, though it does maintain the key and
     * value ordering.

import okhttp3.internal.unmodifiable
import okio.Buffer
import okio.BufferedSource
import okio.ByteString
import okio.Source
import okio.buffer

/**
 * Read and write HPACK v10.
 *
 * http://tools.ietf.org/html/draft-ietf-httpbis-header-compression-12
 *
 * This implementation uses an array for the dynamic table and a list for indexed entries. Dynamic

import static com.google.common.collect.Lists.transform;
import static java.lang.Math.min;
import static java.util.concurrent.Executors.newFixedThreadPool;

import com.google.common.base.Function;
import com.google.common.primitives.Ints;
import java.util.List;
import java.util.Random;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;