returns the directory relative to local path from the specified message . this method returns null , if the specified message is n't a exam_dir - message . concode_field_sep PlaceHolder placeHolder concode_field_sep String getMessageNotNull
String function ( String arg0 , String arg1 ) { final int loc0 = arg0 . indexOf ( arg1 ) ; if ( loc0 < 0 ) { return null ; } return arg0 . substring ( loc0 + arg1 . length ( ) ) ; }