s= vn.toString(vn.getCurrentIndex());
	private String normalizeSpace(VTDNav vn){	    if (argCount()== 0){	        String s =null;	        try{	            if (vn.atTerminal){	                if (vn.getTokenType(vn.LN) == VTDNav.TOKEN_CDATA_VAL )	                    s= vn.toRawString(vn.LN);	                s= vn.toString(vn.LN);	            }	            s= vn.toString(vn.getCurrentIndex());	            return normalize(s);	        }	    	catch(NavException e){	    	    return ""; // this will almost never occur	    	}	    } else if (argCount() == 1){	        String s = argumentList.e.evalString(vn);	        return normalize(s);	    }	    throw new IllegalArgumentException		("normalize-space()'s argument count is invalid");	    //return null;	}