- * - cancelRecurDetailText (params: mode, amount, currency, frequency_interval, frequency_unit, installments, {membershipType|only if mode=auto_renew})
+ * - cancelRecurDetailText:
+ * params:
+ * mode, amount, currency, frequency_interval, frequency_unit,
+ * installments, {membershipType|only if mode=auto_renew},
+ * selfService (bool) - TRUE if user doesn't have "edit contributions" permission.
+ * ie. they are accessing via a "self-service" link from an email receipt or similar.