@utilities.arguments_not_none<EOL><INDENT>def set_identifier(self, identifier):<DEDENT>
raise errors.Unimplemented()<EOL>
Seta the identifier.

        arg:    identifier (string): the identifier
        raise:  InvalidArgument - ``identifier`` is invalid
        raise:  NoAccess - ``identifier`` cannot be modified
        raise:  NullArgument - ``identifier`` is ``null``
        *compliance: mandatory -- This method must be implemented.*