code: def shift(self,
                periods: int,
                axis: libinternals.BlockPlacement = 0,
                fill_value: Any = None) -> List['ExtensionBlock']:
          
          return [
              self.make_block_same_class(
                  self.values.shift(periods=periods, fill_value=fill_value),
                  placement=self.mgr_locs, ndim=self.ndim)
          ]
docs: Shift the block by `periods`.
  
          Dispatches to underlying ExtensionArray and re-boxes in an
          ExtensionBlock.