def destroy(self):
if not hasattr(self, '<STR_LIT>') or not self.server:<EOL><INDENT>raise Exception(<EOL>"""<STR_LIT>""")<EOL><DEDENT>return self.server.cloud_manager.delete_firewall_rule(<EOL>self.server.uuid,<EOL>self.position<EOL>)<EOL>
Remove this FirewallRule from the API.

This instance must be associated with a server for this method to work,
which is done by instantiating via server.get_firewall_rules().