byte[] bytes = new byte[string.length() / 2];
    for (int i = 0; i < string.length(); i += 2) {
      int ch1 = decode(string.charAt(i)) << 4;
      int ch2 = decode(string.charAt(i + 1));
      bytes[i / 2] = (byte) (ch1 + ch2);
    }
    return fromBytesNoCopy(bytes);
  }

  private static int decode(char ch) {
    if (ch >= '0' && ch <= '9') {
      return ch - '0';
    }
    if (ch >= 'a' && ch <= 'f') {

                        String string = o.toString();
                        int i = string.length() - 1;
                        while (i >= 0) {
                            char c = string.charAt(i);
                            if (c == '\n' || c == '\r' || c == ' ') i--;
                            else break;
                        }

                        string = string.substring(0, i + 1).trim();

  }

  private static void assertPutString(char[] chars) {
    Hasher h1 = new NonStreamingVersion().newHasher();
    Hasher h2 = new NonStreamingVersion().newHasher();
    String s = new String(chars);
    // this is the correct implementation of the spec
    for (int i = 0; i < s.length(); i++) {
      h1.putChar(s.charAt(i));
    }
    h2.putUnencodedChars(s);
    assertEquals(h1.hash(), h2.hash());
  }

O **FastAPI** pegará este modelo, gerará o esquema JSON dele e incluirá no local correto do OpenAPI.

Por exemplo, para declarar um outro retorno com o status code `404` e um modelo do Pydantic chamado `Message`, você pode escrever:

```Python hl_lines="18  22"
{!../../docs_src/additional_responses/tutorial001.py!}
```

/// note | "Nota"

Lembre-se que você deve retornar o `JSONResponse` diretamente.

      int slen = s.length();
      for (int index = 0; index < slen; index++) {
        char c = s.charAt(index);
        if (c < replacements.length && replacements[c] != null) {
          return escapeSlow(s, index);
        }
      }
      return s;
    }

    @Override
    @CheckForNull
    protected char[] escape(char c) {
      return c < replaceLength ? replacements[c] : null;
    }
  }

    return normalizeWord(word);
  }

  private static String firstCharOnlyToUpper(String word) {
    return word.isEmpty()
        ? word
        : Ascii.toUpperCase(word.charAt(0)) + Ascii.toLowerCase(word.substring(1));
  }

    // read char by char
    CharSequenceReader reader = new CharSequenceReader(charSequence);
    for (int i = 0; i < expected.length(); i++) {
      assertEquals(expected.charAt(i), reader.read());
    }
    assertFullyRead(reader);

    // read all to one array
    reader = new CharSequenceReader(charSequence);
    char[] buf = new char[expected.length()];

        return getByName( hostname, false );
    }

    static boolean isDotQuadIP( String hostname ) {
        if( Character.isDigit( hostname.charAt( 0 ))) {
            int i, len, dots;
            char[] data;

            i = dots = 0;                    /* quick IP address validation */
            len = hostname.length();
            data = hostname.toCharArray();

            throw new SmbException( "EOF" );
        }
        return Encdec.dec_uint16be( tmp, 0 ) & 0xFFFF;
    }
    public final char readChar() throws SmbException {
        if((read( tmp, 0, 2 )) < 0 ) {
            throw new SmbException( "EOF" );
        }
        return (char)Encdec.dec_uint16be( tmp, 0 );
    }
    public final int readInt() throws SmbException {
        if((read( tmp, 0, 4 )) < 0 ) {

        if (matchWordFirst && !hiraganaQuery && singleWordQuery && text.contains(query)) {
            if (query.length() == 1) {
                return UnicodeBlock.of(query.charAt(0)) != UnicodeBlock.HIRAGANA;
            }
            return true;
        }
        return false;
    }

    protected boolean isHiraganaQuery(final String query) {