Cal. Civ. Proc. Code § 2025.470

The deposition officer may not suspend the taking of testimony without the stipulation of all parties present unless any party attending the deposition, including the deponent, demands that the deposition officer suspend taking the testimony to enable that party or deponent to move for a protective order under Section 2025.420 on the ground that the examination is being conducted in bad faith or in a manner that unreasonably annoys, embarrasses, or oppresses that deponent or party.