create internal function to get all members of circle, independent of current logged-in user

Every time I need to get all the members of a circle I need to set the current User as the circle owner, and then get all members.

			$origUser = $this->userSession->getUser();
			foreach ($circles as $circleId) {
				try {
					$circle = \OCA\Circles\Api\v1\Circles::detailsCircle($circleId);
					$this->userSession->setUser($this->userManager->get($circle->getOwner()->getUserId()));
					$circle = \OCA\Circles\Api\v1\Circles::detailsCircle($circleId);
					$members = $circle->getMembers();
					foreach ($members as $member) {
						$users[] = $member->getUserId();
					}
				} catch (QueryException $e) {
				}
			}
			$this->userSession->setUser($origUser);

I needed to do this several times, in an implementation of calendar reminders to circle members and also in circle -> matrix integration. Is there a way in the api to query for all circle members, independently of the current logged-in user? If not yet, can one be created?

Start with the API entry point \OCA\Circles\Api\v1\Circles::detailsCircle and trace how getMembers() is restricted by the current user. Compare that flow with the session-switching example in the issue. Done means an internal API path can retrieve all members of a circle without changing the logged-in user, supporting the calendar-reminder and Matrix integration use cases.