/** Implicitly imported from package. */
    PACKAGE,

    /** Explicitly imported by Kotlin default. For example, `kotlin.String`. */
    DEFAULT_EXPLICIT,

    /** Star imported (star import) by user. */
    STAR,

    /** Star imported (star import) by Kotlin default. */
    DEFAULT_STAR;

    fun hasHigherPriorityThan(that: ImportKind): Boolean = this < that

    companion object {

	// More interesting regular expressions.
	{`a{,2}`, `str{a{,2}}`},
	{`\.\^\$\\`, `str{.^$\}`},
	{`[a-zABC]`, `cc{0x41-0x43 0x61-0x7a}`},
	{`[^a]`, `cc{0x0-0x60 0x62-0x10ffff}`},
	{`[α-ε☺]`, `cc{0x3b1-0x3b5 0x263a}`}, // utf-8
	{`a*{`, `cat{star{lit{a}}lit{{}}`},

	// Test precedences
	{`(?:ab)*`, `star{str{ab}}`},
	{`(ab)*`, `star{cap{str{ab}}}`},
	{`ab|cd`, `alt{str{ab}str{cd}}`},

 */
package gradlebuild.commons

import org.gradle.api.plugins.JavaPluginExtension
import org.gradle.jvm.toolchain.JavaLanguageVersion
import org.gradle.jvm.toolchain.JvmVendorSpec
// Using star import to workaround https://youtrack.jetbrains.com/issue/KTIJ-24390
import org.gradle.kotlin.dsl.*


internal
fun JavaPluginExtension.configureJavaToolChain() {
    toolchain {

import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.PathSensitive
import org.gradle.api.tasks.PathSensitivity
import org.gradle.api.tasks.TaskAction
// Using star import to workaround https://youtrack.jetbrains.com/issue/KTIJ-24390
import org.gradle.kotlin.dsl.*
import org.gradle.workers.WorkerExecutor
import javax.inject.Inject


@CacheableTask

    /**
     * Represents [KaScope] containing declarations from explicit non-star imports.
     */
    public class ExplicitSimpleImportingScope(override val indexInTower: Int) : ImportingScope()

    /**
     * Represents [KaScope] containing declarations from explicit star imports.
     */
    public class ExplicitStarImportingScope(override val indexInTower: Int) : ImportingScope()

	t := n.Type()
	if t == nil || !t.IsPtr() {
		return n
	}
	t = t.Elem()
	if t == nil {
		return n
	}
	if !t.IsArray() {
		return n
	}
	star := ir.NewStarExpr(base.Pos, n)
	star.SetImplicit(true)
	return Expr(star)
}

func needOneArg(n *ir.CallExpr, f string, args ...interface{}) (ir.Node, bool) {
	if len(n.Args) == 0 {
		p := fmt.Sprintf(f, args...)

    {!> ../../../docs_src/query_params_str_validations/tutorial001_py310.py!}
    ```

🔢 🔢 `q` 🆎 `Union[str, None]` (⚖️ `str | None` 🐍 3️⃣.1️⃣0️⃣), 👈 ⛓ 👈 ⚫️ 🆎 `str` ✋️ 💪 `None`, & 👐, 🔢 💲 `None`, FastAPI 🔜 💭 ⚫️ 🚫 ✔.

!!! note
    FastAPI 🔜 💭 👈 💲 `q` 🚫 ✔ ↩️ 🔢 💲 `= None`.

     `Union` `Union[str, None]` 🔜 ✔ 👆 👨‍🎨 🤝 👆 👍 🐕‍🦺 & 🔍 ❌.

## 🌖 🔬

```

O parâmetro de consulta `q` é do tipo `Union[str, None]`, o que significa que é do tipo `str` mas que também pode ser `None`, e de fato, o valor padrão é `None`, então o FastAPI saberá que não é obrigatório.

!!! note "Observação"
    O FastAPI saberá que o valor de `q` não é obrigatório por causa do valor padrão `= None`.

=== "Python 3.10+"

    ```Python
    q: str | None = None
    ```

=== "Python 3.8+"

    ```Python
    q: Union[str, None] = None
    ```

Вот что мы получим, если обернём это в `Annotated`:

=== "Python 3.10+"

    ```Python
    q: Annotated[str | None] = None
    ```

=== "Python 3.8+"

    ```Python
    q: Annotated[Union[str, None]] = None
    ```

    ```

Der Query-Parameter `q` hat den Typ `Union[str, None]` (oder `str | None` in Python 3.10), was bedeutet, er ist entweder ein `str` oder `None`. Der Defaultwert ist `None`, also weiß FastAPI, der Parameter ist nicht erforderlich.

!!! note "Hinweis"
    FastAPI weiß nur dank des definierten Defaultwertes `=None`, dass der Wert von `q` nicht erforderlich ist