California Code, Corporations Code - CORP § 17709.01

Any member of a foreign or domestic limited liability company may bring a class action on behalf of all or a class of members to enforce any claim common to those members and any of those actions shall be governed by the law governing class actions generally, provided that in order to maintain the class action there shall be no requirement that the class be so numerous that joinder of all members of the class is impracticable.