if dir == "" {
		dir = getDefaultDir()
	}

	if dir == "" {
		if !dirSet {
			return nil, fmt.Errorf("missing option must be provided")
		}
		return nil, fmt.Errorf("provided option cannot be empty")
	}

	// Disallow relative paths, figure out absolute paths.
	dirAbs, err := filepath.Abs(dir)
	if err != nil {
		return nil, err
	}

// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

	"sort"
	"strconv"
	"strings"

	xhttp "github.com/minio/minio/internal/http"

	"github.com/minio/minio/internal/auth"
)

// Whitelist resource list that will be used in query string for signature-V2 calculation.
//
// This list should be kept alphabetically sorted, do not hastily edit.
var resourceList = []string{
	"acl",
	"cors",
	"delete",
	"encryption",
	"legal-hold",
	"lifecycle",
	"location",

	End   *Operand `parser:" \"AND\" @@ "`
}

// In represents the RHS of an IN expression. The RHS can be a list-literal
// (i.e. enclosed in parentheses like `IN (1,2,4)`) or it could be a JSON path
// expression (as in `8.5 IN s.nested[*][*]`). Specifically, it cannot be an
// `Expression` as an expression can never evaluate to a list.
type In struct {
	JPathExpr *JSONPath `parser:"@@"`

    * Without the `None` it would be required (as is the body in the case with `PUT`).
* For `PUT` requests to `/items/{item_id}`, read the body as JSON:
    * Check that it has a required attribute `name` that should be a `str`.
    * Check that it has a required attribute `price` that has to be a `float`.
    * Check that it has an optional attribute `is_offer`, that should be a `bool`, if present.

{* ../../docs_src/extra_models/tutorial002_py310.py hl[7,13:14,17:18,21:22] *}

## `Union` or `anyOf` { #union-or-anyof }

You can declare a response to be the `Union` of two or more types, that means, that the response would be any of them.

It will be defined in OpenAPI with `anyOf`.

	if err := DB.Model(&user2).Association("Account").Append(&account); err != nil {
		t.Fatalf("Error happened when append account, got %v", err)
	}

	if account.ID == 0 {
		t.Fatalf("Account's ID should be created")
	}

	user.Account = account
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Account", 1, "AfterAppend")

	// Replace
	account2 := Account{Number: "account-has-one-replace"}

	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/minio/pkg/v3/sync/errgroup"
)

// list all errors that can be ignore in a bucket operation.
var bucketOpIgnoredErrs = append(baseIgnoredErrs, errDiskAccessDenied, errUnformattedDisk)

// list all errors that can be ignored in a bucket metadata operation.
var bucketMetadataOpIgnoredErrs = append(bucketOpIgnoredErrs, errVolumeNotFound)

### Migration and Enforcement

* **New code**: All new contributions must use American English
* **Existing code**: British English spellings in existing code should be updated opportunistically when those areas are modified, unless constrained by backward compatibility