get_document
Description:
Warning: get_document is deprecated since 2.10.
Gets the Document interface for an Accessible.
Note: 
      
        
    
    Use atspi_accessible_get_document_iface instead.
Parameters:
| this | a pointer to the Accessible instance to query. | 
Returns:
| a pointer to an Document interface instance, or NULL if this does not implement Document. |