The courts have recognized the existence of the power to send for records and papers. In parliamentary privilege jurisprudence, they have recognized that the exercise of the privilege itself is not something that is subject to court scrutiny. The manner in which the privilege is exercised is for Parliament alone to decide and, in recognizing the power to send for records and papers, they haven't set any limit to this privilege.
On June 21st, 2023. See this statement in context.