Add the thousand genomes frequency
        
        Args:
            variant_obj (puzzle.models.Variant)
            info_dict (dict): A info dictionary

def _add_thousand_g(self, variant_obj, info_dict):
        """Add the thousand genomes frequency
        
        Args:
            variant_obj (puzzle.models.Variant)
            info_dict (dict): A info dictionary
        
        """
        thousand_g = info_dict.get('1000GAF')
        if thousand_g:
            logger.debug("Updating thousand_g to: {0}".format(
                thousand_g))
            variant_obj.thousand_g = float(thousand_g)
            variant_obj.add_frequency('1000GAF', variant_obj.get('thousand_g'))