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