code: public Response getBill(int month, int year)
              throws RequestException, LocalOperationException {
          Request request = new Request(this);
          return new Response(request.get("/bill/" + year + String.format("-%02d", month)));
      }
docs: Returns the bill for the month specified.
  
  @param month for which bill to retrieve.
  @param year for which bill to retrieve.
  @return {@link Response}
  
  @throws RequestException if request to transloadit server fails.
  @throws LocalOperationException if something goes wrong while running non-http operations.