code: def combine(self, node, othernode, op=None, unary_op=None, register=False,
                  aliasing_type=False):
          
          if self.result[othernode] is self.builder.UnknownType:
              if node not in self.result:
                  self.result[node] = self.builder.UnknownType
              return
  
          if aliasing_type:
              self.combine_(node, othernode, op or operator.add,
                            unary_op or (lambda x: x), register)
              for a in self.strict_aliases[node]:
                  self.combine_(a, othernode, op or operator.add,
                                unary_op or (lambda x: x), register)
          else:
              self.combine_(node, othernode, op or operator.add,
                            unary_op or (lambda x: x), register)
docs: Change `node` typing with combination of `node` and `othernode`.
  
          Parameters
          ----------
          aliasing_type : bool
              All node aliasing to `node` have to be updated too.