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: index.rb
    path of file: ./repos/shiba/lib/shiba
    
    the code of the file until where you have to start completion: require 'yaml'
require 'pp'
require 'shiba/index_stats'

module Shiba
  class Index
    # Given the path to the information_schema.statistics output, returns index statistics keyed by table name.
    # Examples:
    # Exp
    
    def self.parse(path)
      stats = IndexStats.new
      tables = {}
      records = read(path)
      headers = records.shift.map { |header| header.downcase }
      records.each do |r|
        h = Hash[headers.zip(r)]
        h["cardinality"] = h["cardinality"].to_i
        stats.add_index_column(h['table_name'], h['index_name'], h['column_name'], h['cardinality'], h['non_unique'] == "0")
      end
      stats
    end