question: @ Override public Object visitOrderByExpression ( OrderByExpression order_expression , String expression_string , List < Object > orders ) { StringBuilder sb = new StringBuilder ( ) ; sb . append ( orders . get ( 0 ) ) ; for ( int i = 1 ; i < orders . size ( ) ; i ++ ) { sb . append ( ", " ) ; sb . append ( orders . get ( i ) ) ; } return sb . toString ( ) ; }
target:  Builds the ORDER BY clause (not prefixed with the ORDER BY statement). 