Generates proteins with quant from the lookup table

def set_feature_generator(self):
        """Generates proteins with quant from the lookup table"""
        self.features = preparation.build_proteintable(self.lookup,
                                                       self.headerfields,
                                                       self.mergecutoff,
                                                       self.isobaric,
                                                       self.precursor,
                                                       self.probability,
                                                       self.fdr, self.pep,
                                                       self.genecentric)