Usage: mixcr exportAirr [--target <n>] [--imgt-gaps] [--from-alignment] [--limit <n>]
                        [--force-overwrite] [--no-warnings] [--verbose] [--help] input.
                        (vdjca|clna|clns) [output.tsv]
Exports a clns, clna or vdjca file to Airr formatted tsv file.
      input.(vdjca|clna|clns)
                           Path to input file
      [output.tsv]         Path where to write export. Will write to output if omitted.
  -t, --target <n>         Index of source sequence that was used to build clone/alignment (use -1
                             to export from the target containing CDR3).
  -g, --imgt-gaps          If this option is specified, alignment fields will be padded with
                             IMGT-style gaps.
  -a, --from-alignment     Get fields like fwr1, cdr2, etc.. from alignment.
  -n, --limit <n>          Limit number of filtered alignments; no more than N alignments will be
                             outputted
  -f, --force-overwrite    Force overwrite of output file(s).
      -nw, --no-warnings   Suppress all warning messages.
      --verbose            Verbose messages.
  -h, --help               Show this help message and exit.
