# File lib/deltacloud/base_driver/features.rb, line 62
      def operation(name, &block)
        op = @operations.find { |op| op.name == name }
        if block_given?
          if op.nil?
            op = Operation.new(name, &block)
            @operations << op
          else
            op.instance_eval(&block)
          end
        end
        op
      end