code: def AddFXrefWrite(self, method, classobj, field):
          
          if field not in self._fields:
              self._fields[field] = FieldClassAnalysis(field)
          self._fields[field].AddXrefWrite(classobj, method)
docs: Add a Field Write to this class
  
          :param method:
          :param classobj:
          :param field:
          :return: