code: def _parse_info(self, info_field):
          
          info = dict()
          for item in info_field.split(';'):
              # Info fields may be "foo=bar" or just "foo".
              # For the first case, store key "foo" with value "bar"
              # For the second case, store key "foo" with value True.
              info_item_data = item.split('=')
              # If length is one, just store as a key with value = true.
              if len(info_item_data) == 1:
                  info[info_item_data[0]] = True
              elif len(info_item_data) == 2:
                  info[info_item_data[0]] = info_item_data[1]
          return info
docs: Parse the VCF info field