Refer to the
    [CPU-only developer Dockerfile](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/tools/dockerfiles/dockerfiles/devel-cpu.Dockerfile)
    and
    [GPU developer Dockerfile](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/tools/dockerfiles/dockerfiles/devel-gpu.Dockerfile)
    for the required packages. Alternatively, use the said

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.http2

import java.io.Closeable
import java.io.IOException
import java.util.logging.Level.FINE
import java.util.logging.Logger
import okhttp3.internal.concurrent.Lockable
import okhttp3.internal.concurrent.withLock
import okhttp3.internal.format
import okhttp3.internal.http2.Http2.CONNECTION_PREFACE

    checkPublicSuffix("biz", null)
    checkPublicSuffix("domain.biz", "domain.biz")
    checkPublicSuffix("b.domain.biz", "domain.biz")
    checkPublicSuffix("a.b.domain.biz", "domain.biz")
    // TLD with some 2-level rules.
    checkPublicSuffix("com", null)
    checkPublicSuffix("example.com", "example.com")
    checkPublicSuffix("b.example.com", "example.com")
    checkPublicSuffix("a.b.example.com", "example.com")

            final int n = NEGOTIATE_REQUEST.encode(sbuf, 4);
            Encdec.enc_uint32be(n & 0xFFFF, sbuf, 0); /* 4 byte ssn msg header */

            if (LogStream.level >= 4) {
                log.println(NEGOTIATE_REQUEST);
                if (LogStream.level >= 6) {
                    Hexdump.hexdump(log, sbuf, 4, n);
                }
            }

            out.write(sbuf, 0, 4 + n);
            out.flush();

        // Test nested exception chain
        Exception rootCause = new IllegalStateException("Root cause");
        Exception middleCause = new RuntimeException("Middle cause", rootCause);
        String message = "Top level error";

        SearchQueryException exception = new SearchQueryException(message, middleCause);

        assertEquals(message, exception.getMessage());
        assertEquals(middleCause, exception.getCause());

 *
 * [publicsuffix_org]: https://publicsuffix.org/
 */
class PublicSuffixDatabase internal constructor(
  private val publicSuffixList: PublicSuffixList,
) {
  /**
   * Returns the effective top-level domain plus one (eTLD+1) by referencing the public suffix list.
   * Returns null if the domain is a public suffix or a private address.
   *
   * Here are some examples:
   *
   * ```java

import static java.lang.Character.MAX_SURROGATE;
import static java.lang.Character.MIN_SURROGATE;

import com.google.common.annotations.GwtCompatible;

/**
 * Low-level, high-performance utility methods related to the {@linkplain Charsets#UTF_8 UTF-8}
 * character encoding. UTF-8 is defined in section D92 of <a
 * href="http://www.unicode.org/versions/Unicode6.2.0/ch03.pdf">The Unicode Standard Core

import static java.lang.Character.MAX_SURROGATE;
import static java.lang.Character.MIN_SURROGATE;

import com.google.common.annotations.GwtCompatible;

/**
 * Low-level, high-performance utility methods related to the {@linkplain Charsets#UTF_8 UTF-8}
 * character encoding. UTF-8 is defined in section D92 of <a
 * href="http://www.unicode.org/versions/Unicode6.2.0/ch03.pdf">The Unicode Standard Core

   * @throws IllegalStateException if a concurrency level was already set
   */
  @CanIgnoreReturnValue
  public CacheBuilder<K, V> concurrencyLevel(int concurrencyLevel) {
    checkState(
        this.concurrencyLevel == UNSET_INT,
        "concurrency level was already set to %s",
        this.concurrencyLevel);
    checkArgument(concurrencyLevel > 0);

      <codeSegments>
        <codeSegment>
          <version>1.0.0/1.3.0</version>
          <code>
    public static final String USER_LEVEL = "user-level";
    public static final String PROJECT_LEVEL = "project-level";
    public static final String GLOBAL_LEVEL = "global-level";

    private String sourceLevel = USER_LEVEL;
    private boolean sourceLevelSet = false;

    public void setSourceLevel(String sourceLevel) {