question: @ Override public String toString ( ) { StringBuffer buf = new StringBuffer ( ) ; boolean first = true ; for ( FilterPredClause clause : clauses ) { if ( first ) first = false ; else { buf . append ( ' ' ) ; buf . append ( boolOp ) ; buf . append ( ' ' ) ; } buf . append ( clause ) ; } return buf . toString ( ) ; }
target:  Returns the string representation of this FilterPred.