# File lib/fog/identity/openstack/v3/models/policies.rb, line 15
          def find_by_id(id)
            cached_policy = find { |policy| policy.id == id }
            return cached_policy if cached_policy
            policy_hash = service.get_policy(id).body['policy']
            Fog::Identity::OpenStack::V3::Policy.new(
              policy_hash.merge(:service => service)
            )
          end