question: public boolean equals ( Object obj ) { if ( this == obj ) return true ; if ( obj == null ) return false ; if ( getClass ( ) != obj . getClass ( ) ) return false ; TypedSet other = ( TypedSet ) obj ; if ( type == null ) { if ( other . type != null ) return false ; } else if ( ! type . equals ( other . type ) ) return false ; if ( ! Arrays . equals ( values , other . values ) ) return false ; return true ; }
target:  Two typed sets are equals if they have the same type and the elements of the set are the same (and appear in the same order)