parameters: (self)
docstring: size(s) of state(s) used by this cell.
  
      It can be represented by an Integer, a TensorShape or a tuple of Integers
      or TensorShapes.
docstring_summary: size(s) of state(s) used by this cell.
docstring_tokens: size ( s ) of state ( s ) used by this cell .
function: def state_size(self):
      """size(s) of state(s) used by this cell.
  
      It can be represented by an Integer, a TensorShape or a tuple of Integers
      or TensorShapes.
      """
      raise NotImplementedError("Abstract method")
function_tokens: def state_size ( self ) : raise NotImplementedError ( "Abstract method" )