question: public int add ( SearchResultDataLine tl , int row ) { boolean isNotJunk = junkFilter . allow ( tl ) ; boolean allow = allow ( tl ) ; if ( isNotJunk || ! SearchSettings . hideJunk ( ) ) { if ( allow ) { return super . add ( tl , row ) ; } else { HIDDEN . add ( tl ) ; _numResults += 1 ; } } else { _numResults += 1 ; } return - 1 ; }
target:  Determines whether or not this line should be added.