question: public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 2 ) ; newVector . addElement ( new Option ( "\tNumber of execution slots.\n" + "\t(default 1 - i.e. no parallelism)\n" + "\t(use 0 to auto-detect number of cores)" , "num-slots" , 1 , "-num-slots <num>" ) ) ; newVector . addAll ( Collections . list ( super . listOptions ( ) ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.