code: def validate_instance_size(self, size):
          ''' integer between 5-1024 (inclusive) '''
          try:
              int(size)
          except ValueError:
              return '*** Error: size must be a whole number between 5 and 1024.'
          if int(size) < 5 or int(size) > 1024:
              return '*** Error: size must be between 5-1024 GB.'
          return Truf validate_instance_size(self, size):
          ''' integer between 5-1024 (inclusive) '''
          try:
              int(size)
          except ValueError:
              return '*** Error: size must be a whole number between 5 and 1024.'
          if int(size) < 5 or int(size) > 1024:
              return '*** Error: size must be between 5-1024 GB.'
          return True
docs: integer between 5-1024 (inclusive)