on constructWriterManager  
  return(createManager(#writer_manager, getClassVariable("writer.manager.class")))
end

on deconstructWriterManager  
  return(removeManager(#writer_manager))
end

on getWriterManager  
  tMgr = getObjectManager()
  if not tMgr.managerExists(#writer_manager) then
    return(constructWriterManager())
  end if
  return(tMgr.getManager(#writer_manager))
end

on createWriter tid, tMetrics 
  return(getWriterManager().create(tid, tMetrics))
end

on removeWriter tid 
  return(getWriterManager().Remove(tid))
end

on getWriter tid, tDefault 
  return(getWriterManager().GET(tid, tDefault))
end

on writerExists tid 
  return(getWriterManager().exists(tid))
end

on printWriters  
  return(getWriterManager().print())
end