# File lib/mongo_mapper/utils.rb, line 3
    def self.get_safe_options(options)
      return {} unless options and options.key? :safe
      safe = options[:safe]
      safe = {:w => 1} if safe == true
      safe = {:w => 0} if safe == false
      safe = {:w => safe} if safe.is_a? Fixnum
      safe
    end