/// <summary>
/// Ensure that a manager can access a venue. Throw an error if not.
/// </summary>
/// <param name="managerId">Manager ID</param>
/// <param name="venueId">Venue ID</param>
private async Task _EnsureManagerCanAccessVenue(string managerId, string venueId)
{
// Check that the manager can access the venue.
bool managerCanAccess = await _database.ManagerCanAccessVenue(managerId, venueId);
// If the manager does not have access, throw an error.
if (!managerCanAccess)
{
throw new NoAccessException();
}
}