question: public Set < String > addContent ( String variable , String value ) { if ( ! paused ) { curState . addToState ( new Assignment ( variable , value ) ) ; return update ( ) ; } else { log . info ( "system is paused, ignoring " + variable + "=" + value ) ; return Collections . emptySet ( ) ; } }
target:  Adds the content (expressed as a pair of variable=value) to the current dialogue state, and subsequently updates the dialogue state.