{* ../../docs_src/behind_a_proxy/tutorial004.py hl[9] *}

and then it won't include it in the OpenAPI schema.

## Mounting a sub-application

If you need to mount a sub-application (as described in [Sub Applications - Mounts](sub-applications.md){.internal-link target=_blank}) while also using a proxy with `root_path`, you can do it normally, as you would expect.

	CheckPet(t, pets[0], *user.Pets[0])

	if count := DB.Model(&user).Where("name = ?", user.Pets[1].Name).Association("Pets").Count(); count != 1 {
		t.Fatalf("should only find one pets, but got %v", count)
	}

	if count := DB.Model(&user).Where("name = ?", "not found").Association("Pets").Count(); count != 0 {
		t.Fatalf("should only find no pet with invalid conditions, but got %v", count)
	}

	// Count
	AssertAssociationCount(t, user, "Pets", 2, "")

 * from this file as necessary.
 *
 * This class also keeps a small buffer of bytes recently read from upstream. This is intended to
 * save a small amount of file I/O and data copying.
 */
class Relay private constructor(
  /**
   * Read/write persistence of the upstream source and its metadata. Its layout is as follows:
   *

			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         browserHSTSSeconds,
			Description: `set Strict-Transport-Security 'max-age' amount of seconds value` + defaultHelpPostfix(browserHSTSSeconds),
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         browserHSTSIncludeSubdomains,

@app.get("/app")
def read_main():
    return {"message": "Hello World from main app"}


subapi = FastAPI()


@subapi.get("/sub")
def read_sub():
    return {"message": "Hello World from sub API"}

# زیر برنامه ها - اتصال

اگر نیاز دارید که دو برنامه مستقل FastAPI، با OpenAPI مستقل و رابط‌های کاربری اسناد خود داشته باشید، می‌توانید یک برنامه
اصلی داشته باشید و یک (یا چند) زیر برنامه را به آن متصل کنید.

## اتصال (mount) به یک برنامه **FastAPI**

کلمه "Mounting" به معنای افزودن یک برنامه کاملاً مستقل در یک مسیر خاص است، که پس از آن مدیریت همه چیز در آن مسیر، با path operations (عملیات های مسیر) اعلام شده در آن زیر برنامه می باشد.

### برنامه سطح بالا

        setScopedVertices(scopedVertices);

        this.versionedVertices = scopedVertices || versionedVertices;
        this.scopedVertices = scopedVertices;

        int count = countNodes(tree);

        init(count, count + (count / 2));

        processTreeNodes(null, tree, 0, 0);
    }
    // ------------------------------------------------------------------------

		uint32_t sid_index;
	} LsarTranslatedSid;

	typedef struct {
		[range(0,1000)] uint32_t count;
		[size_is(count)] LsarTranslatedSid *sids;
	} LsarTransSidArray;

	typedef struct {
		unicode_string name;
		sid_t *sid;
	} LsarTrustInformation;

	typedef struct {
		[range(0,1000)] uint32_t count;
		[size_is(count)] LsarTrustInformation *domains;
		uint32_t max_count;
	} LsarRefDomainList;

	typedef struct {

		uint32_t sid_index;
	} LsarTranslatedSid;

	typedef struct {
		[range(0,1000)] uint32_t count;
		[size_is(count)] LsarTranslatedSid *sids;
	} LsarTransSidArray;

	typedef struct {
		unicode_string name;
		sid_t *sid;
	} LsarTrustInformation;

	typedef struct {
		[range(0,1000)] uint32_t count;
		[size_is(count)] LsarTrustInformation *domains;
		uint32_t max_count;
	} LsarRefDomainList;

	typedef struct {

	// The maximum number of entries to return
	count int
	// Follow directory symlink
	followDirSymlink bool
}

// Return all the entries at the directory dirPath.
func readDir(dirPath string) (entries []string, err error) {
	return readDirWithOpts(dirPath, readDirOpts{count: -1})
}

// Return up to count entries at the directory dirPath.
func readDirN(dirPath string, count int) (entries []string, err error) {