from_hash

# File actionpack/lib/action_controller/metal/params_wrapper.rb, line 89
      def self.from_hash(hash)
        name    = hash[:name]
        format  = Array(hash[:format])
        include = hash[:include] && Array(hash[:include]).collect(&:to_s)
        exclude = hash[:exclude] && Array(hash[:exclude]).collect(&:to_s)
        new name, format, include, exclude, nil, nil
      end