question: @ SuppressWarnings ( "unchecked" ) public ThrowingMockTokenFilterFactory ( Map < String , String > args ) { super ( args ) ; String exceptionClassName = args . get ( "exceptionClassName" ) ; if ( exceptionClassName == null ) { throw new RuntimeException ( "Required parameter exceptionClassName is missing" ) ; } try { exceptionClass = ( Class < ? extends RuntimeException > ) Class . forName ( exceptionClassName ) ; } catch ( ClassNotFoundException e ) { throw new RuntimeException ( e ) ; } }
target:  Initialize this factory via a set of key-value pairs.