### 檢查自動 API 文件 { #check-the-automatic-api-docs }

現在，執行 `fastapi` 指令：

<div class="termy">

```console
$ fastapi dev

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

然後開啟位於 [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs) 的文件。

你會看到主應用的自動 API 文件，只包含它自己的*路徑操作*：

  @Override
  public ImmutableRangeSet<C> subRangeSet(Range<C> range) {
    if (!isEmpty()) {
      Range<C> span = span();
      if (range.encloses(span)) {
        return this;
      } else if (range.isConnected(span)) {
        return new ImmutableRangeSet<>(intersectRanges(range));
      }
    }
    return of();
  }

  /**

==============================================================================*/
#ifndef TENSORFLOW_C_EAGER_GRADIENT_CHECKER_H_
#define TENSORFLOW_C_EAGER_GRADIENT_CHECKER_H_

#include <memory>

#include "absl/types/span.h"
#include "tensorflow/c/eager/abstract_tensor_handle.h"
#include "tensorflow/c/eager/unified_api_testutil.h"

namespace tensorflow {
namespace gradients {

                                                            aria-label="Close">
                                                        <span aria-hidden="true">×</span>
                                                    </button>
                                                </div>
                                                <div class="modal-body">

	<ul class="navbar-nav">
		<li class="nav-item">
			<a class="nav-link" data-widget="pushmenu" href="#">
				<i class="fas fa-bars" aria-hidden="true"></i>
				<span class="sr-only"><la:message
						key="labels.admin_toggle_navi" /></span>
			</a>
		</li>
	</ul>
	<ul class="navbar-nav ml-auto">
		<c:if test="${eoled}">
		<li class="nav-item" data-toggle="tooltip" data-placement="left"

接著在建立 `FastAPI` 應用時使用它。

然後你可以將環境變數 `OPENAPI_URL` 設為空字串，以停用 OpenAPI（包含文件 UI），如下：

<div class="termy">

```console
$ OPENAPI_URL= uvicorn main:app

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

之後若你造訪 `/openapi.json`、`/docs` 或 `/redoc`，會看到如下的 `404 Not Found` 錯誤：

```JSON
{
    "detail": "Not Found"
}

                                                            aria-label="Close">
                                                        <span aria-hidden="true">×</span>
                                                    </button>
                                                </div>
                                                <div class="modal-body">

                                                                aria-label="Close">
                                                            <span aria-hidden="true">×</span>
                                                        </button>
                                                    </div>
                                                    <div class="modal-body">

    assertThrows(NoSuchElementException.class, () -> ImmutableRangeMap.of().span());
  }

  public void testSpanSingleRange() {
    for (Range<Integer> range : RANGES) {
      RangeMap<Integer, Integer> rangemap =
          ImmutableRangeMap.<Integer, Integer>builder().put(range, 1).build();
      assertEquals(range, rangemap.span());
    }
  }

  public void testSpanTwoRanges() {

<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

Result (German):

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server