# File lib/rack/moneta_store.rb, line 28
    def initialize(app, store = nil, options = {}, &block)
      @app = app
      @cache = options.delete(:cache)
      if block
        raise ArgumentError, 'Use either block or options' unless options.empty?
        @store = ::Moneta.build(&block)
      else
        raise ArgumentError, 'Block or argument store is required' unless @store = store
        @store = ::Moneta.new(@store, options) if Symbol === @store
      end
    end