Class::data::accessor is the marriage of class::accessor and class::data::inheritable into a single module. it is used for creating accessors to class properties that is overridable in subclasses as well as in class instances.

for example:

pere::ubu->mk_classaccessor('suitcase');
will generate the method suitcase() in the class pere::ubu.

this new method can be used to get and set a piece of class property.

pere::ubu->suitcase('red');
$suitcase = pere::ubu->suitcase;