question: protected String toValString ( Set vals ) { StringBuilder sb = new StringBuilder ( ) ; boolean first = true ; for ( Iterator i = vals . iterator ( ) ; i . hasNext ( ) ; ) { String val = ( String ) i . next ( ) ; val = encodeVal ( val ) ; if ( first ) { first = false ; } else { sb . append ( ',' ) ; } sb . append ( val ) ; } return sb . toString ( ) ; }
target:  Converts a Set of values for an attribute into a string,  encoding special characters in the values as necessary.