docs: def add_entry(self, row):
          """This will parse the VCF entry and also store it within the VCFFile. It will also
          return the VCFEntry as well.
  
          """
          var_call = VCFEntry(self.individuals)
          var_call.parse_entry( row )
          self.entries[(var_call.chrom, var_call.pos)] = var_call
          return var_call