How I can iterate data in structure

[Suliman via Digitalmars-d-learn]

void main()
{
        
        auto result = readconfig();

        foreach (_; result)
        {
                // I want to iterate result that I got from structure.
        }
}

auto readconfig()
{
        struct ConfigStruct
        {
                string key1;
                string key2;
        }

        ConfigStruct confstruct = ConfigStruct();
        confstruct.key1="Ivan";
        confstruct.key2="admin";

        return confstruct;

}