Parses SNV entries to SNVItems, objects
        representing the content for every entry, that
        can be used for further processing.

def _parse_content(self, snv_entries):
        """
        Parses SNV entries to SNVItems, objects
        representing the content for every entry, that
        can be used for further processing.
        """
        if len(snv_entries) == 1:
            return
        for line in snv_entries[1:]:
            info_dict = self._map_info_to_col(line)
            self._snv_list.append(SNVItem(**info_dict))