def get_authorization_smart_vault_session(self, vault_id=None):
if vault_id is None:<EOL><INDENT>raise NullArgument<EOL><DEDENT>raise Unimplemented()<EOL>
Gets the session for managing dynamic authorization vaults.

        arg:    vault_id (osid.id.Id): the ``Id`` of the vault
        return: (osid.authorization.AuthorizationSmartVaultSession) - a
                ``AuthorizationSmartVaultSession``
        raise:  NotFound - ``vault_id`` not found
        raise:  NullArgument - ``vault_id`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_authorization_smart_vault()``
                is ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_authorization_smart_vault()`` is ``true``.*