# File lib/safe_yaml.rb, line 185
    def self.unsafe_load_file(filename)
      if SafeYAML::MULTI_ARGUMENT_YAML_LOAD
        # https://github.com/tenderlove/psych/blob/v1.3.2/lib/psych.rb#L296-298
        File.open(filename, 'r:bom|utf-8') { |f| self.unsafe_load(f, filename) }
      else
        # https://github.com/tenderlove/psych/blob/v1.2.2/lib/psych.rb#L231-233
        self.unsafe_load File.open(filename)
      end
    end