```ruby
require 'stepping_stone/text_mapper/pattern'

module SteppingStone
  module TextMapper
    class Mapping
      def self.from_fluent(dsl_args)
        from, to = dsl_args.shift
        meth_name, *types = to
        pattern = [from].flatten
        new(pattern, meth_name, types)
      end

      attr_reader :from, :to, :name

      def initialize(from, to, types=[])
        @name = from
        #@from = Pattern[*from]
        @from = Pattern.new(from)
        @to = to # MethodSignature.new(to) ???
        @types = types
      end

      def match(pattern)
        @from === pattern
      end

      def captures_from(pattern)
        if captures = @from.match(pattern)
          if @types.empty?
            captures
          else
            captures.zip(@types).collect do |capture, type|
              # FIXME: Add other built-ins with idiosyncratic build protocols
              if Integer == type
                capture.to_i
              elsif Float == type
                capture.to_f
              else
                type.new(capture)
              end
            end
          end
        else
          []
        end
      end

      def dispatch(target, action=[])
        args = captures_from(action)
        target.send(to, *args)
      end

      def call(*args)
        dispatch(*args)
      end
    end
  end
end
```

Remove commented line and use the attr_reader
user
```ruby
require 'stepping_stone/text_mapper/pattern'

module SteppingStone
  module TextMapper
    class Mapping
      def self.from_fluent(dsl_args)
        from, to = dsl_args.shift
        meth_name, *types = to
        pattern = [from].flatten
        new(pattern, meth_name, types)
      end

      attr_reader :from, :to, :name

      def initialize(from, to, types=[])
        @name = from
        @from = Pattern.new(from)
        @to = to # MethodSignature.new(to) ???
        @types = types
      end

      def match(pattern)
        from === pattern
      end

      def captures_from(pattern)
        if captures = from.match(pattern)
          if @types.empty?
            captures
          else
            captures.zip(@types).collect do |capture, type|
              # FIXME: Add other built-ins with idiosyncratic build protocols
              if Integer == type
                capture.to_i
              elsif Float == type
                capture.to_f
              else
                type.new(capture)
              end
            end
          end
        else
          []
        end
      end

      def dispatch(target, action=[])
        args = captures_from(action)
        target.send(to, *args)
      end

      def call(*args)
        dispatch(*args)
      end
    end
  end
end
```
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