Gnomad allele frequency query

Sorry, my earlier example incorrectly included the locus and alleles key fields in the select. It should have been:

ht.select(
  gnomad_ac=ht.freq[0].AC,
  gnomad_af=ht.freq[0].AF,
  gnomad_an=ht.freq[0].AN,
  gnomad_homozygote_count=ht.freq[0].homozygote_count,
).export("/path/to/export.tsv")