El parámetro de query `q` es del tipo `Union[str, None]` (o `str | None` en Python 3.10), lo que significa que es de tipo `str` pero también podría ser `None`, y de hecho, el valor por defecto es `None`, así que FastAPI sabrá que no es requerido.

/// note | Nota

FastAPI sabrá que el valor de `q` no es requerido por el valor por defecto `= None`.

 *
 * <p><b>Warning:</b> This class deals only with {@code char} values, that is, <a
 * href="http://www.unicode.org/glossary/#BMP_character">BMP characters</a>. It does not understand
 * <a href="http://www.unicode.org/glossary/#supplementary_code_point">supplementary Unicode code
 * points</a> in the range {@code 0x10000} to {@code 0x10FFFF} which includes the majority of

        @DisplayName("Should decode with actual free units skipped")
        void testDecodeSkipsActualFreeUnits() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[32];
            // total allocation units (8 bytes)
            buffer[4] = 0x01;
            // caller available allocation units (8 bytes)
            buffer[12] = 0x01;
            // actual free units (8 bytes) - should be skipped

	typedef struct {
		int count;
		[size_is(count)] ShareInfo502 *array;
	} ShareInfoCtr502;

	typedef [switch_type(int)] union {
		[case(0)] ShareInfo0 *info0;
		[case(1)] ShareInfo1 *info1;
		[case(502)] ShareInfo502 *info1;
	} ShareInfo;

	typedef [switch_type(int)] union {
		[case(0)] ShareInfoCtr0 *info0;
		[case(1)] ShareInfoCtr1 *info1;
		[case(502)] ShareInfoCtr502 *info1;
	} ShareCtr;

	[op(0x0f)]

        // Read total allocation units.
        info.alloc = readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // read caller available allocation units
        info.free = readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // skip actual free units
        bufferIndex += 8;

        info.sectPerAlloc = readInt4(buffer, bufferIndex);

import (
	"database/sql/driver"
	"fmt"
	"reflect"
	"regexp"
	"strconv"
	"strings"
	"time"
	"unicode"

	"gorm.io/gorm/utils"
)

const (
	tmFmtWithMS = "2006-01-02 15:04:05.999"
	tmFmtZero   = "0000-00-00 00:00:00"
	nullStr     = "NULL"
)

func isPrintable(s string) bool {
	for _, r := range s {
		if !unicode.IsPrint(r) {
			return false
		}
	}
	return true
}

          || c > safeMaxChar
          || c < safeMinChar) {
        return escapeSlow(s, i);
      }
    }
    return s;
  }

  /**
   * Escapes a single Unicode code point using the replacement array and safe range values. If the
   * given character does not have an explicit replacement and lies outside the safe range then
   * {@link #escapeUnsafe} is called.
   *

<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="encodingHelper" class="org.codelibs.fess.crawler.helper.EncodingHelper">
		<postConstruct name="addEncodingMapping">
			<arg>"unicode"</arg>
			<arg>"UTF-16LE"</arg>
		</postConstruct>
	</component>

```

////

#### `Union` বা `Optional` ব্যবহার

যদি আপনি Python 3.10-এর নীচের সংস্করণ ব্যবহার করেন, তবে এখানে আমার খুবই **ব্যক্তিগত** দৃষ্টিভঙ্গি থেকে একটি টিপস:

* 🚨 `Optional[SomeType]` ব্যবহার এড়িয়ে চলুন।
* এর পরিবর্তে ✨ **`Union[SomeType, None]` ব্যবহার করুন** ✨।

            final int flags = getFlags();
            final boolean unicode = (flags & NTLMSSP_NEGOTIATE_UNICODE) != 0;
            final String oem = unicode ? null : getOEMEncoding();
            final String domainName = getDomain();
            byte[] domain = null;
            if (domainName != null && domainName.length() != 0) {
                domain = unicode ? domainName.getBytes(UNI_ENCODING) : domainName.getBytes(oem);
            }