California Code of Civil Procedure section 2025.420 subdivision (b) provides that, "the court, for good cause shown, may make any order that justice requires to protect any party... from unwarranted annoyance, embarrassment, or oppression, or undue burden and expense." Code Civ. Proc. § 2025.420 (b)(12) expressly authorizes the court to exclude from a deposition "designated persons, other than the parties to the action and their officers and counsel."