private set

  // These properties are guarded by `this`. They are typically only accessed by the thread executing
  // the call, but they may be accessed by other threads for duplex requests.

  private var requestBodyOpen = false
  private var responseBodyOpen = false
  private var socketSinkOpen = false
  private var socketSourceOpen = false

Не переймайтеся, завдяки структурі коду ми далі забезпечимо **одну сесію SQLModel на запит**, власне цього і прагне `check_same_thread`.

### Створіть таблиці { #create-the-tables }

Додамо функцію, яка використовує `SQLModel.metadata.create_all(engine)`, щоб **створити таблиці** для всіх «табличних моделей».

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[21:22] hl[21:22] *}

`list`, `dict`, `tuple`처럼 타입 매개변수(내부 타입)를 갖는 타입을 선언하려면,
대괄호 `[` 및 `]`를 사용해 내부 타입(들)을 "타입 매개변수"로 전달하세요.

```Python
my_list: list[str]
```

이 모든 것은 타입 선언을 위한 표준 파이썬 문법입니다.

내부 타입을 갖는 모델 어트리뷰트에 대해 동일한 표준 문법을 사용하세요.

마찬가지로 예제에서 `tags`를 구체적으로 "문자열의 리스트"로 만들 수 있습니다:

{* ../../docs_src/body_nested_models/tutorial002_py310.py hl[12] *}

## 집합 타입 { #set-types }

要声明具有类型参数（内部类型）的类型，例如 `list`、`dict`、`tuple`，使用方括号 `[` 和 `]` 传入内部类型作为「类型参数」：

```Python
my_list: list[str]
```

这完全是用于类型声明的标准 Python 语法。

对具有内部类型的模型属性也使用相同的标准语法。

因此，在我们的示例中，我们可以将 `tags` 明确地指定为一个「字符串列表」：

{* ../../docs_src/body_nested_models/tutorial002_py310.py hl[12] *}

## Set 类型 { #set-types }

但是随后我们考虑了一下，意识到标签不应该重复，它们很大可能会是唯一的字符串。

 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.Tables.AbstractCell;
import java.util.ArrayList;
import java.util.List;
import java.util.function.BinaryOperator;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collector;

 * errors for using {@code get(Comparator.class)} as a {@code Comparator<Foo>}, for example.
 * Immutable empty instances are returned for collection types; {@code ""} for string; {@code 0} for
 * number types; reasonable default instance for other stateless types. For mutable types, a fresh
 * instance is created each time {@code get()} is called.
 *
 * @author Kevin Bourrillion
 * @author Ben Yu
 * @since 12.0
 */

    ]
    first_parent = Path("docs/en/docs")
    yield from first_parent.glob("*.md")
    for dir_path in first_dirs:
        yield from dir_path.rglob("*.md")
    first_dirs_str = tuple(str(d) for d in first_dirs)
    for path in Path("docs/en/docs").rglob("*.md"):
        if str(path).startswith(first_dirs_str):
            continue
        if path.parent == first_parent:
            continue

 * errors for using {@code get(Comparator.class)} as a {@code Comparator<Foo>}, for example.
 * Immutable empty instances are returned for collection types; {@code ""} for string; {@code 0} for
 * number types; reasonable default instance for other stateless types. For mutable types, a fresh
 * instance is created each time {@code get()} is called.
 *
 * @author Kevin Bourrillion
 * @author Ben Yu
 * @since 12.0
 */

import okhttp3.OkHttpClientTestRule
import okhttp3.Protocol
import okhttp3.RecordingHostnameVerifier
import okhttp3.Request
import okhttp3.RequestBody
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.internal.duplex.MockSocketHandler
import okhttp3.testing.PlatformRule
import okio.ProtocolException
import okio.buffer
import okio.use
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.Tables.AbstractCell;
import java.util.ArrayList;
import java.util.List;
import java.util.function.BinaryOperator;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collector;