class_docstr: Connect4 Game class implementing the alpha-zero-general Game interface.
  
  Use 1 for player1 and -1 for player2.
docstr: Returns:
      actionSize: number of all possible actions
docstr_tok: ["Returns",":","actionSize",":","number","of","all","possible","actions"]
code: def getActionSize(self):
      """
      Returns:
          actionSize: number of all possible actions
      """
      return self._base_board.width
  
imports: import numpy
  from collections import namedtuple
label_desc: Use image node_id 4 for calling the Connect4Game obj's underlying member method code with example usage: obj.getActionSize() and returns: self