[ADD] documentation

account_financial_report_webkit/report/aged_partner_balance.py

@@ -135,7 +135,14 @@ class AccountAgedTrialBalanceWebkit(PartnersOpenInvoicesWebkit):
         return res
 
     def compute_aged_lines(self, partner_id, ledger_lines, data):
-        """Add to accounts browse records contained in :attr:`objects`"""
+        """Add property aged_lines to accounts browse records
+        contained in :attr:`objects` for a given partner
+
+        :params: partner_id current partner
+        :params: ledger_lines generated by parent
+                 :class:`.open_invoices.PartnersOpenInvoicesWebkit`
+
+        :return computed ledger lines"""
         lines_to_age = self.filter_lines(partner_id, ledger_lines)
         res = {}
         end_date = self._get_end_date(data)