You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: expert_othello.rb
    path of file: ./repos/shoes4/samples
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Othello
# by tieg
# 1/13/08
# with help: DeeJay, Ryan M. from mailing list
#
# FIXME bug if it memorizes it
    
    def new_board
      Array.new(BOARD_SIZE[0]) do # build each cols L to R
        Array.new(BOARD_SIZE[1]) do # insert cells in each col
          0
        end
      end
    end