cakephp/docs — pull request #495 by dereuromark (2013-02-24 17:04:58+00:00)
Title: cleanup and replace should with can

"This property can be omitted" is more accurate since inflecting it is really cheap and usually the way to go here.
Setting the attribute has caused more harm as it can easily be misspelled and is only additional redundancy that is not necessary here (anymore).