Return list of all existing InformationSet.
App::__Def()->getInformationSetList();
See below example:
$info = App::__Def()->getInformationSetList();
/*
Return like
Array
(
[0] => emailtemplate
[1] => appslide
[2] => attributegroup
[3] => countries
[4] => discountcoupon
[5] => product
[6] => storeslide
[7] => widget
[8] => blogpost
[9] => homepress
)
*/