How to pass alias as template parameter?

[Andrey via Digitalmars-d-learn]

Hello,
This code doesn't compile:

-----------------------------------------------------------------------
import std.meta;
import std.stdio;
enum Option : string
{
    First = "-first" ,
    Second = "-second",
    Qwerty = "-qwerty"
}

void handler(Option option)(string[] args, ref ushort index)
{
    writeln("Case: ", args[index]);
}

void handler(string arg, ref ushort index)
{
    writeln("Default: ", arg, " at index ", index);
}

alias Pair(alias key, alias value) = AliasSeq!(key, value);
alias Pairs = AliasSeq!(Pair!(Option.First, 
handler!(Option.First)), Pair!(Option.Second, 
handler!(Option.Second)), handler);

void parseArgs(alias sequence)(ushort index, string[] args)
{
    alias last = sequence[$ - 1];
    alias pairs = sequence[0 .. $ - 2];

    for(ushort i = index; i < args.length; ++i)
    {
        string arg = args[i];
        switch(arg)
            {
                static foreach(pair; pairs)
                {
                    case pair.key:
                        pair.value(args, i);
                        break;
                }
        
                default:
                last(arg, i);
                break;
            }
    }
}

void main()
{
    ushort index = 1;
    string[] args = ["-second", "123", "-qaz", "true", "-first", 
"77", "value"];
    parseArgs!Pairs(index, args);
}
-----------------------------------------------------------------------

Output:
onlineapp.d(52): Error: template instance `parseArgs!("-first", 
handler, "-second", handler, handler)` does not match template 
declaration parseArgs(alias sequence)(ushort index, string[] 
args)

I don't understand how to pass my "Pairs" alias into template 
function "parseArgs".

P.S. Yes, I know that exists "getopt".