docs: def fasta_from_biom(table, fasta_file_name):
      '''Save sequences from a biom table to a fasta file
  
      Parameters
      ----------
      table : biom.Table
          The biom table containing the sequences
      fasta_file_name : str
          Name of the fasta output file
      '''
      logger = logging.getLogger(__name__)
      logger.debug('saving biom table sequences to fasta file %s' % fasta_file_name)
  
      with open(fasta_file_name, 'w') as f:
          for cseq in table.ids(axis='observation'):
              f.write('>%s\n%s\n' % (cseq, cseq))
      logger.info('saved biom table sequences to fasta file %s' % fasta_file_name)