assertThat(ArbitraryInstances.get(GenericDeclaration.class)).isNotNull();
  }

  public void testGet_regex() {
    assertEquals(Pattern.compile("").pattern(), ArbitraryInstances.get(Pattern.class).pattern());
    assertEquals(0, ArbitraryInstances.get(MatchResult.class).groupCount());
  }

  public void testGet_usePublicConstant() {

    void testDecodeDataIntegrity() throws SMBProtocolDecodingException {
        // Prepare buffer with specific pattern
        byte[] buffer = new byte[32];
        byte[] expectedData = new byte[16];

        // Fill data section with pattern
        for (int i = 0; i < 16; i++) {
            expectedData[i] = (byte) (0xA0 + i);
            buffer[16 + i] = expectedData[i];
        }

 * override one or more methods to modify the behavior of the backing iterator as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class forwards calls to <i>only some</i> {@code
 * default} methods. Specifically, it forwards calls only for methods that existed <a

 * override one or more methods to modify the behavior of the backing map as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class forwards calls to <i>only some</i> {@code
 * default} methods. Specifically, it forwards calls only for methods that existed <a

    return string || "";
  }-*/;

  @JsMethod
  static native String emptyToNull(@Nullable String string) /*-{
    return string || null;
  }-*/;

  static CommonPattern compilePattern(String pattern) {
    throw new UnsupportedOperationException();
  }

  static boolean patternCompilerIsPcreLike() {
    throw new UnsupportedOperationException();
  }

    assertThat(ArbitraryInstances.get(GenericDeclaration.class)).isNotNull();
  }

  public void testGet_regex() {
    assertEquals(Pattern.compile("").pattern(), ArbitraryInstances.get(Pattern.class).pattern());
    assertEquals(0, ArbitraryInstances.get(MatchResult.class).groupCount());
  }

  public void testGet_usePublicConstant() {

Ahora sabes que cuando las necesites puedes usarlas en **FastAPI**.

### Pydantic v1 `regex` en lugar de `pattern` { #pydantic-v1-regex-instead-of-pattern }

Antes de la versión 2 de Pydantic y antes de FastAPI 0.100.0, el parámetro se llamaba `regex` en lugar de `pattern`, pero ahora está en desuso.

Todavía podrías ver algo de código que lo usa:

//// tab | Pydantic v1

        Smb2CloseRequest onesRequest = new Smb2CloseRequest(mockConfig, onesFileId, testFileName);
        testFileIdInRequest(onesRequest, onesFileId);

        // Test with alternating pattern
        byte[] alternatingFileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            alternatingFileId[i] = (byte) (i % 2 == 0 ? 0xAA : 0x55);
        }

 * service. Subclasses should override one or more methods to modify the behavior of the backing
 * executor service as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code
 * default} methods. Instead, it inherits their default implementations. When those implementations

    /**
     * Creates a directory entry enumeration iterator.
     *
     * @param th the SMB tree handle for the connection
     * @param parent the parent resource being enumerated
     * @param wildcard the wildcard pattern for filtering entries
     * @param filter additional resource name filter to apply
     * @param searchAttributes the file attributes to search for
     * @throws CIFSException if an error occurs during initialization
     */