docs: def to_fasta(self):
          """Returns a string with the sequence in fasta format
  
          Returns
          -------
          str
              The FASTA representation of the sequence
          """
          prefix, suffix = re.split('(?<=size=)\w+', self.label, maxsplit=1)
          new_count = int(round(self.frequency))
          new_label = "%s%d%s" % (prefix, new_count, suffix)
          return ">%s\n%s\n" % (new_label, self.sequence)