def allByAge(self, cascadeFetch=False):
matchedKeys = self.getPrimaryKeys(sortByAge=True)<EOL>if matchedKeys:<EOL><INDENT>return self.getMultiple(matchedKeys, cascadeFetch=cascadeFetch)<EOL><DEDENT>return IRQueryableList([], mdl=self.mdl)<EOL>
allByAge - Get the underlying objects which match the filter criteria, ordered oldest -> newest
        If you are doing a queue or just need the head/tail, consider .first() and .last() instead.


@param cascadeFetch <bool> Default False, If True, all Foreign objects associated with this model
   will be fetched immediately. If False, foreign objects will be fetched on-access.

@return - Objects of the Model instance associated with this query, sorted oldest->newest