def tokengetter(self, f):
        self._tokengetter = f
        return f
validate the genomic SNP calls for C57BL6 using the
dataset/ETHPy150Open lepture/flask-oauthlib/flask_oauthlib/provider/oauth1.py/OAuth1Provider.tokengetter--crossover with--dataset/ETHPy150Open CGATOxford/cgat/obsolete/pipeline_snps.py/recallGenomicSNPs