dup_operator_identifier
  
  Description:
  [ 
Version ( since = 
"1.0" ) ]
public string dup_operator_identifier ()
  
    Gets a copy of the Operator Identifier of the Sim object.
    Parameters:
    
    Returns:
    
      
        | The Operator Identifier of the Sim object, or nullif it couldn't be
            retrieved. The returned value should be freed with g_free. |