def migrate_target(self): return self._map(mappings.target, (mappings.isotope_number(self.isotope_number),))
def migrate_preparation(self): return self._map(mappings.preparation, (mappings.isotope_number(self.isotope_number),))
def migrate_sample(self): return self._map(mappings.sample, (mappings.isotope_number(self.isotope_number),))
def migrate_calculation_sample(self): return self._map(mappings.calculation_sample, (mappings.isotope_number(self.isotope_number),))