code: def p_ArrayLiteralContent(p):
      '''
      ArrayLiteralContent : Expression
      ArrayLiteralContent : Expression COLON Expression
      '''
      if len(p) < 3:
          p[0] = ArrayLiteralContent(None, p[1])
      else:
          p[0] = ArrayLiteralContent(p[1], p[3]f p_ArrayLiteralContent(p):
      '''
      ArrayLiteralContent : Expression
      ArrayLiteralContent : Expression COLON Expression
      '''
      if len(p) < 3:
          p[0] = ArrayLiteralContent(None, p[1])
      else:
          p[0] = ArrayLiteralContent(p[1], p[3])
docs: ArrayLiteralContent : Expression
      ArrayLiteralContent : Expression COLON Expression