protected void putOption(final Class optionClass,final String[] names){
  Check.isTrue(names.length > 0,"names.length > 0");
  _optionsToCanonicalNames.put(optionClass,names[0]);
  for (int i=0; i < names.length; i++) {
    _aliasesToOptions.put(names[i],optionClass);
  }
}

protected void putOption ( final Class optionClass , final String [ ] names ) { Check . isTrue ( names . length > 0 , "names.length > 0" ) ; _optionsToCanonicalNames . put ( optionClass , names [ 0 ] ) ; for ( int i = 0 ; i < names . length ; i ++ ) { _aliasesToOptions . put ( names [ i ] , optionClass ) ; } }
add an option in the hash map .
