code: def split(self, start=None, end=None, datatype=None, **kwargs):
          
          if not self.interface.multi:
              if datatype == 'array':
                  obj = self.array(**kwargs)
              elif datatype == 'dataframe':
                  obj = self.dframe(**kwargs)
              elif datatype == 'columns':
                  obj = self.columns(**kwargs)
              elif datatype is None:
                  obj = self
              else:
                  raise ValueError("%s datatype not support" % datatype)
              return [obj]
          return self.interface.split(self, start, end, datatype, **kwargs)
docs: The split method allows splitting a Path type into a list of
          subpaths of the same type. A start and/or end may be supplied
          to select a subset of paths.