def make_request(pickup_location, options, notes = '')
      resp = request_item_request(pickup_location, options, notes)

      return extract_request_number(resp)
    end
def make_request(pickup_location, options, notes = '')
      resp = request_item_request(pickup_location, options, notes)

      return extract_request_number(resp)
    end
Pass in a BD exact search and pickup location eg
     make_request(pickup_location, :isbn => isbn)

 Pass in nil for pickup_location if... not sure exactly what
 BD will do, but it does allow it.

 Returns the BD RequestNumber, or nil if a request could
 not be made

 See also make_request! to raise if request can not be made