public void testUniqueIndexNullValue() {
    List<@Nullable String> listWithNull = Lists.newArrayList((String) null);
    assertThrows(
        NullPointerException.class,
        () -> Maps.uniqueIndex((List<String>) listWithNull, Functions.constant(1)));
  }

  /** Null keys aren't allowed either. */
  public void testUniqueIndexNullKey() {
    List<String> oneStringList = Lists.newArrayList("foo");
    assertThrows(

Gt="scrollspy",Zt="bs.scrollspy",te=o.default.fn[Gt],ee="active",ne="position",ie=".nav, .list-group",oe={offset:10,method:"auto",target:""},ae={offset:"number",method:"string",target:"(string|element)"},se=function(){function t(t,e){var n=this;this._element=t,this._scrollElement="BODY"===t.tagName?window:t,this._config=this._getConfig(e),this._selector=this._config.target+" .nav-link,"+this._config.target+" .list-group-item,"+this._config.target+" .dropdown-item",this._offsets=[],this._targets=[],t...

        queryLambda.callback(cq);
        final Collection<FilterFunctionBuilder> list = new ArrayList<>();
        if (functionsLambda != null) {
            functionsLambda.callback((cqLambda, scoreFunctionBuilder) -> {
                ClickLogCQ cf = new ClickLogCQ();
                cqLambda.callback(cf);
                list.add(new FilterFunctionBuilder(cf.getQuery(), scoreFunctionBuilder));
            });
        }

```JSON
{
  "detail": "Item not found"
}
```

/// tip

When raising an `HTTPException`, you can pass any value that can be converted to JSON as the parameter `detail`, not only `str`.

You could pass a `dict`, a `list`, etc.

They are handled automatically by **FastAPI** and converted to JSON.

///

## Add custom headers { #add-custom-headers }

The following commands set a local alias, validate the server information, create a bucket, copy data to that bucket, and list the contents of the bucket.

```sh
mc alias set local http://localhost:9000 minioadmin minioadmin
mc admin info
mc mb data
mc cp ~/Downloads/mydata data/
mc ls data/
```

	otags := &objectTagging{
		TagSet: &ObjectTagSet{},
	}

	var list []tags.Tag
	for k, v := range ot.ToMap() {
		list = append(list, tags.Tag{
			Key:   k,
			Value: v,
		})
	}
	// Always return in sorted order for tags.
	sort.Slice(list, func(i, j int) bool {
		return list[i].Key < list[j].Key
	})
	otags.TagSet.Tags = list

	writeSuccessResponseXML(w, encodeResponse(otags))
}

                rpc.names.names = new lsarpc.LsarTranslatedName[1];
                rpc.names.names[0] = new lsarpc.LsarTranslatedName();
                rpc.names.names[0].sid_type = (short) jcifs.SID.SID_TYPE_UNKNOWN; // not in switch list
                rpc.names.names[0].name = new UnicodeString("unknown", false);
                rpc.names.names[0].sid_index = 0;
                return null;
            }).when(handle).sendrecv(any());

```JSON
{
  "detail": "Item not found"
}

```

/// tip | 提示

触发 `HTTPException` 时，可以用参数 `detail` 传递任何能转换为 JSON 的值，不仅限于 `str`。

还支持传递 `dict`、`list` 等数据结构。

**FastAPI** 能自动处理这些数据，并将之转换为 JSON。

///

## 添加自定义响应头

有些场景下要为 HTTP 错误添加自定义响应头。例如，出于某些方面的安全需要。

一般情况下可能不会需要在代码中直接使用响应头。

但对于某些高级应用场景，还是需要添加自定义响应头：

            "*\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000";

    /**
     * This is a special name for querying the master browser that serves the
     * list of hosts found in "Network Neighborhood".
     */

    public static final String MASTER_BROWSER_NAME = "\u0001\u0002__MSBROWSE__\u0002";

    /**

        // Then
        assertEquals(0, request.getCapabilities() & Smb2Constants.SMB2_GLOBAL_CAP_ENCRYPTION);
    }

    @Test
    @DisplayName("Should generate correct dialect list")
    void testDialectGeneration() {
        // Given
        when(mockConfig.getMinimumVersion()).thenReturn(DialectVersion.SMB210);
        when(mockConfig.getMaximumVersion()).thenReturn(DialectVersion.SMB311);