get_reader_addresses
Description:
Gets a list of GDEmailAddresses of the document readers whose documents will be queried.
Parameters:
| this | 
Returns:
| 
           a list of GDEmailAddresses of the readers concerned by the query, or 
              | 
      
Gets a list of GDEmailAddresses of the document readers whose documents will be queried.
| this | 
| 
           a list of GDEmailAddresses of the readers concerned by the query, or 
              |