parameters: (self, key, ndim, subset=None)
return_statement: return self
docstring: Sub-classes to define. Return a sliced object.
  
          Parameters
          ----------
          key : string / list of selections
          ndim : {1, 2}
              Requested ndim of result.
          subset : object, default None
              Subset to act on.
docstring_summary: Sub-classes to define. Return a sliced object.
docstring_tokens: Sub - classes to define . Return a sliced object .
function: def _gotitem(self, key, ndim, subset=None) -> Series:
          """
          Sub-classes to define. Return a sliced object.
  
          Parameters
          ----------
          key : string / list of selections
          ndim : {1, 2}
              Requested ndim of result.
          subset : object, default None
              Subset to act on.
          """
          return self
function_tokens: def _gotitem ( self , key , ndim , subset = None ) -> Series : return self