}
		if iv, ok := test.metadata[crypto.MetaIV]; !ok {
			t.Errorf("Test %d: crypto.SSEIV must be part of metadata: %v", i, iv)
		}
		if mac, ok := test.metadata[crypto.MetaSealedKeySSEC]; !ok {
			t.Errorf("Test %d: ServerSideEncryptionKeyMAC must be part of metadata: %v", i, mac)
		}
	}
}

var decryptObjectMetaTests = []struct {
	info    ObjectInfo
	request *http.Request
	expErr  error
}{
	{

		shouldFail: false,
	},
	{
		header:     http.Header{crypto.MetaAlgorithm: []string{crypto.InsecureSealAlgorithm}},
		shouldFail: false,
	},
	{
		header:     http.Header{crypto.MetaSealedKeySSEC: []string{"mac"}},
		shouldFail: false,
	},
	{
		header:     http.Header{ReservedMetadataPrefix + "Key": []string{"value"}},
		shouldFail: true,
	},
}

func TestContainsReservedMetadata(t *testing.T) {

  if [[ "$TFCI_NIGHTLY_UPDATE_VERSION_ENABLE" == 1 ]]; then
    export TFCI_INSTALLER_WHL_PROJECT_NAME="$TFCI_INSTALLER_WHL_NIGHTLY_PROJECT_NAME"
  fi
  export project_name="$TFCI_INSTALLER_WHL_PROJECT_NAME"
fi

# Mac builds have some specific setup needs. See setup_macos.sh for details
if [[ "${OSTYPE}" =~ darwin* ]]; then
  source ./ci/official/utilities/setup_macos.sh
fi

# Create and expand to the full path of TFCI_OUTPUT_DIR

        numberOfNames = src[srcIndex] & 0xFF;
        int namesLength = numberOfNames * 18;
        int statsLength = rDataLength - namesLength - 1;
        numberOfNames = src[srcIndex++] & 0xFF;
        // gotta read the mac first so we can populate addressArray with it
        System.arraycopy( src, srcIndex + namesLength, macAddress, 0, 6 );
        srcIndex += readNodeNameArray( src, srcIndex );
        stats = new byte[statsLength];

    CONDITIONAL_HOST_MOUNTS+="--mount type=bind,source=${local_config},destination=/config/${kubeconfig_random} "
  fi
}

# This function is designed for maximum compatibility with various platforms. This runs on
# any Mac or Linux platform with bash 4.2+. Please take care not to modify this function
# without testing properly.
#
# This function will properly handle any type of path including those with spaces using the

     */
    private static final String FAMILY_DOS = "dos";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_MAC = "mac";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_TANDEM = "tandem";

    /**
     * OS family that can be tested for. {@value}
     */

    visibility = ["//visibility:public"],
)

# Sometimes Bazel reports darwin_x86_64 as "darwin" and sometimes as
# "darwin_x86_64". The former shows up when building on a Mac x86_64 host for a Mac x86_64 target.
# The latter shows up when cross-compiling for Mac x86_64 from a Mac ARM machine and in internal
# Google builds.
config_setting(
    name = "macos_x86_64_default",
    constraint_values = if_google(

    first_name: str, last_name: str
```

Chính là nó.

Những thứ đó là "type hints":

```Python hl_lines="1"
{!../../docs_src/python_types/tutorial002.py!}
```

Đó không giống như khai báo những giá trị mặc định giống như:

```Python
    first_name="john", last_name="doe"
```

Nó là một thứ khác.

Chúng ta sử dụng dấu hai chấm (`:`), không phải dấu bằng (`=`).

var preferredCiphers = []string{
	"******@****.***", gcm256CipherID,
	chacha20Poly1305ID,
	"aes128-ctr", "aes192-ctr", "aes256-ctr",
}

// supportedMACs specifies a default set of MAC algorithms in preference order.
// This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed
// because they have reached the end of their useful life.

		return
	}

	aKey, err := GlobalKMS.MAC(GlobalContext, &kms.MACRequest{Message: []byte("root access key")})
	if errors.Is(err, kes.ErrNotAllowed) || errors.Is(err, errors.ErrUnsupported) {
		return // If we don't have permission to compute the HMAC, don't change the cred.
	}
	if err != nil {
		logger.Fatal(err, "Unable to generate root access key using KMS")
	}