glacier_get_vault_access_policy: This operation retrieves the access-policy subresource set on the vault;
for more information on setting this subresource, see Set Vault Access
Policy (PUT access-policy)
[required] The AccountId value is the AWS account ID of the account that owns the
vault. You can either specify an AWS account ID or optionally a single
'-' (hyphen), in which case Amazon S3 Glacier uses the AWS account ID
associated with the credentials used to sign the request. If you use an
account ID, do not include any hyphens ('-') in the ID.
if (FALSE) {
# The example retrieves the access-policy set on the vault named# example-vault.svc$get_vault_access_policy(
accountId = "-",
vaultName = "example-vault")
}