class_docstr: Connect4 Game class implementing the alpha-zero-general Game interface.
  
  Use 1 for player1 and -1 for player2.
docstr: Returns:
      (x,y): a tuple of board dimensions
docstr_tok: ["Returns",":","(","x",",","y",")",":","a","tuple","of","board","dimensions"]
code: def getBoardSize(self):
      """
      Returns:
          (x,y): a tuple of board dimensions
      """
      return (self._base_board.height, self._base_board.width)
  
imports: import numpy
  from collections import namedtuple
label_desc: Use image node_id 3 for calling the Connect4Game obj's underlying member method code with example usage: obj.getBoardSize() and returns: self,  self