lib/etl/engine.rb
def post_process(control)
      say_on_own_line "Executing post processes"
      Engine.logger.debug "Post-processing #{control.file}"
      control.post_processors.each do |processor|
        processor.process
      end
      Engine.logger.debug "Post-processing complete"
      say "Post-processing complete"
    end
def post_process(control)
      say_on_own_line "Executing post processes"
      Engine.logger.debug "Post-processing #{control.file}"
      control.post_processors.each do |processor|
        processor.process
      end
      Engine.logger.debug "Post-processing complete"
      say "Post-processing complete"
    end
Execute all postprocessors