question: @ Override public void performRequest ( String request ) { if ( request . compareTo ( "Stop" ) == 0 ) { stop ( ) ; } else if ( request . compareTo ( "Save model" ) == 0 ) { saveModel ( ) ; } else if ( request . compareTo ( "Load model" ) == 0 ) { loadModel ( ) ; } else { throw new IllegalArgumentException ( request + " not supported (Classifier)" ) ; } }
target:  Perform a particular request