@Benchmark
  int weakInterner(int reps) {
    Interner<String> interner = Interners.newWeakInterner();
    for (int i = 0; i < reps; i++) {
      String unused = interner.intern(Double.toHexString(Math.random()));
    }
    return reps;
  }

  @CanIgnoreReturnValue
  @Benchmark
  int strongInterner(int reps) {
    Interner<String> interner = Interners.newStrongInterner();
    for (int i = 0; i < reps; i++) {

    assertSame(canonical, pool.intern(not));
  }

  public void testWeak_null() {
    Interner<String> pool = Interners.newWeakInterner();
    assertThrows(NullPointerException.class, () -> pool.intern(null));
  }

  public void testWeak_builder() {
    int concurrencyLevel = 42;
    Interner<Object> interner =
        Interners.newBuilder().weak().concurrencyLevel(concurrencyLevel).build();

## Instalar `websockets` { #install-websockets }

Asegúrate de crear un [entorno virtual](../virtual-environments.md){.internal-link target=_blank}, activarlo e instalar `websockets` (un paquete de Python que facilita usar el protocolo "WebSocket"):

<div class="termy">

```console
$ pip install websockets

---> 100%

Si necesitas un repaso de 2 minutos sobre cómo usar tipos en Python (aunque no uses FastAPI), revisa el tutorial corto: [Tipos en Python](python-types.md){.internal-link target=_blank}.

Escribes Python estándar con tipos:

```Python
from datetime import date

from pydantic import BaseModel

# Declara una variable como un str

`UploadFile` hat die folgenden `async`hronen Methoden. Sie alle rufen die entsprechenden Methoden des darunterliegenden Datei-Objekts auf (wobei intern `SpooledTemporaryFile` verwendet wird).

* `write(daten)`: Schreibt `daten` (`str` oder `bytes`) in die Datei.
* `read(anzahl)`: Liest `anzahl` (`int`) bytes/Zeichen aus der Datei.

/** Closes this, ignoring any checked exceptions.  */
internal fun ServerSocket.closeQuietly() {
  try {
    close()
  } catch (rethrown: RuntimeException) {
    throw rethrown
  } catch (_: Exception) {
  }
}

internal fun Long.toHexString(): String = java.lang.Long.toHexString(this)

internal fun Int.toHexString(): String = Integer.toHexString(this)

internal fun <T> readFieldOrNull(
  instance: Any,

import okhttp3.internal.http2.Http2.TYPE_GOAWAY
import okhttp3.internal.http2.Http2.TYPE_HEADERS
import okhttp3.internal.http2.Http2.TYPE_PING
import okhttp3.internal.http2.Http2.TYPE_PUSH_PROMISE
import okhttp3.internal.http2.Http2.TYPE_SETTINGS
import okhttp3.internal.http2.Http2.formatFlags
import okhttp3.internal.http2.Http2.frameLog
import okhttp3.internal.http2.Http2.frameLogWindowUpdate
import org.junit.jupiter.api.Test

  exports okhttp3;
  exports okhttp3.internal to okhttp3.logging, okhttp3.sse, okhttp3.java.net.cookiejar, okhttp3.dnsoverhttps, mockwebserver3, okhttp3.mockwebserver, okhttp3.coroutines, okhttp3.tls;
  exports okhttp3.internal.concurrent to mockwebserver3, okhttp3.mockwebserver;
  exports okhttp3.internal.connection to mockwebserver3, okhttp3.mockwebserver, okhttp3.logging;
  exports okhttp3.internal.http to okhttp3.logging, okhttp3.brotli, mockwebserver3;

 */
package jcifs.internal.smb2.create;

import java.nio.charset.StandardCharsets;
import java.util.LinkedList;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.Configuration;
import jcifs.internal.CommonServerMessageBlockRequest;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.SmbBasicFileInfo;

import okhttp3.internal.http2.Http2.FLAG_END_STREAM
import okhttp3.internal.http2.Http2.FLAG_NONE
import okhttp3.internal.http2.Http2.INITIAL_MAX_FRAME_SIZE
import okhttp3.internal.http2.Http2.TYPE_CONTINUATION
import okhttp3.internal.http2.Http2.TYPE_DATA
import okhttp3.internal.http2.Http2.TYPE_GOAWAY
import okhttp3.internal.http2.Http2.TYPE_HEADERS
import okhttp3.internal.http2.Http2.TYPE_PING