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: core.rb
    path of file: ./repos/phonelib/lib/phonelib
    
    the code of the file until where you have to start completion: module Phonelib
  
    
    def load_data
      data_file = "#{File.dirname(__FILE__)}/../../#{FILE_MAIN_DATA}"
      default_data = Marshal.load(File.binread(data_file))
      if override_phone_data
        override_data_file = Marshal.load(File.binread(override_phone_data))
        default_data.merge!(override_data_file)
      end