#include <sstream>

#include <seqan3/core/type_list/type_list.hpp>
#include <seqan3/io/alignment_file/input.hpp>

auto sam_file_raw = R"(@HD	VN:1.6	SO:coordinate	GO:none
@SQ	SN:ref	LN:45
r001	99	ref	7	30	8M2I4M1D3M	=	37	39	TTAGATAAAGGATACTG	*
r003	0	ref	29	30	5S6M	*	0	0	GCCTAAGCTAA	*	SA:Z:ref,29,-,6H5M,17,0;
r003	2064	ref	29	17	6H5M	*	0	0	TAGGC	*	SA:Z:ref,9,+,5S6M,30,1;
r001	147	ref	237	30	9M	=	7	-39	CAGCGGCAT	*	NM:i:1
)";

int main()
{
    seqan3::alignment_file_input fin{std::istringstream{sam_file_raw}, seqan3::format_sam{}};

    auto it = fin.begin();

    // the following are equivalent:
    auto & rec0 = *it;
    auto & rec1 = fin.front();
    // Note: both become invalid after incrementing "it"!
}
