.put(int.class, 1)
            .build();
    assertEquals(2, map.size());

    assertEquals(0, (int) map.getInstance(Integer.class));
    assertEquals(0, (int) map.getInstance(TypeToken.of(Integer.class)));
    assertEquals(1, (int) map.getInstance(int.class));
    assertEquals(1, (int) map.getInstance(TypeToken.of(int.class)));
  }

  public void testParameterizedType() {

   * that may have been bound to a subtype.
   *
   * <p>{@code getInstance(Foo.class)} is equivalent to {@code
   * getInstance(TypeToken.of(Foo.class))}.
   */
  <T extends @NonNull B> @Nullable T getInstance(Class<T> type);

  /**
   * Returns the value the specified type is mapped to, or {@code null} if no entry for this type is

   * that may have been bound to a subtype.
   *
   * <p>{@code getInstance(Foo.class)} is equivalent to {@code
   * getInstance(TypeToken.of(Foo.class))}.
   */
  <T extends @NonNull B> @Nullable T getInstance(Class<T> type);

  /**
   * Returns the value the specified type is mapped to, or {@code null} if no entry for this type is

    assertThat(map.get(Integer.class)).isNull();
    assertThat(map.getInstance(Integer.class)).isNull();

    map.put(Long.class, null);
    assertThat(map.get(Long.class)).isNull();
    assertThat(map.getInstance(Long.class)).isNull();
  }

  public void testPrimitiveAndWrapper() {
    assertThat(map.getInstance(int.class)).isNull();
    assertThat(map.getInstance(Integer.class)).isNull();

    in.put(Double.class, Math.PI);
    ClassToInstanceMap<Number> map = ImmutableClassToInstanceMap.copyOf(in);
    assertEquals(2, map.size());

    Number zero = map.getInstance(Number.class);
    assertEquals(0, zero);

    Double pi = map.getInstance(Double.class);
    assertThat(pi).isEqualTo(Math.PI);

    assertSame(map, ImmutableClassToInstanceMap.copyOf(map));
  }

  public void testCopyOf_map_nulls() {

  @Throws(SignatureException::class)
  fun checkSignature(issuer: PublicKey): Boolean {
    val signedData = CertificateAdapters.tbsCertificate.toDer(tbsCertificate)

    return Signature.getInstance(tbsCertificate.signatureAlgorithmName).run {
      initVerify(issuer)
      update(signedData.toByteArray())
      verify(signatureValue.byteString.toByteArray())
    }
  }

    } catch (IllegalStateException expected) {
    } finally {
      Providers.setProviderList(providers);
    }
  }

  public void testMultipleUpdates() throws Exception {
    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(SHA1_KEY);
    mac.update("hello".getBytes(UTF_8));
    mac.update("world".getBytes(UTF_8));

    assertEquals(
        HashCode.fromBytes(mac.doFinal()),

		var rowsAffected int64
		tx = db.getInstance()

		// the reflection length judgment of the optimized value
		reflectLen := reflectValue.Len()

		callFc := func(tx *DB) error {
			for i := 0; i < reflectLen; i += batchSize {
				ends := i + batchSize
				if ends > reflectLen {
					ends = reflectLen
				}

				subtx := tx.getInstance()
				subtx.Statement.Dest = reflectValue.Slice(i, ends).Interface()

    when {
      majorVersion != null && majorVersion >= 9 ->
        SSLContext.getInstance("TLS")
      else ->
        try {
          // Based on SSLSocket.getApplicationProtocol check we should
          // have TLSv1.3 if we request it.
          // See https://www.oracle.com/java/technologies/javase/8u261-relnotes.html
          SSLContext.getInstance("TLSv1.3")
        } catch (nsae: NoSuchAlgorithmException) {

    val trustStore = newEmptyKeyStore(keyStoreType)
    for (i in trustedCertificates.indices) {
      trustStore.setCertificateEntry("cert_$i", trustedCertificates[i])
    }

    val factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm())
    factory.init(trustStore)
    val result = factory.trustManagers!!
    check(result.size == 1 && result[0] is X509TrustManager) {