discardAllParams

fn discardAllParams(r: *Render, fn_proto_node: Ast.Node.Index) Error!void {
    const tree = &r.tree;
    const ais = r.ais;
    var buf: [1]Ast.Node.Index = undefined;
    const fn_proto = tree.fullFnProto(&buf, fn_proto_node).?;
    var it = fn_proto.iterate(tree);
    while (it.next()) |param| {
        const name_ident = param.name_token.?;
        assert(tree.tokenTag(name_ident) == .identifier);
        try ais.writeAll("_ = ");
        try ais.writeAll(tokenSliceForRender(r.tree, name_ident));
        try ais.writeAll(";\n");
    }
}