code: def dump(self, file_name, page_size=10, vtimeout=10, sep='\n'):
          
          fp = open(file_name, 'wb')
          n = 0
          l = self.get_messages(page_size, vtimeout)
          while l:
              for m in l:
                  fp.write(m.get_body())
                  if sep:
                      fp.write(sep)
                  n += 1
              l = self.get_messages(page_size, vtimeout)
          fp.close()
          return n
docs: Utility function to dump the messages in a queue to a file
          NOTE: Page size must be < 10 else SQS errors