code: def super_mro(self):
          
          if not isinstance(self.mro_pointer, scoped_nodes.ClassDef):
              raise exceptions.SuperError(
                  "The first argument to super must be a subtype of "
                  "type, not {mro_pointer}.",
                  super_=self,
              )
  
          if isinstance(self.type, scoped_nodes.ClassDef):
              # `super(type, type)`, most likely in a class method.
              self._class_based = True
              mro_type = self.type
          else:
              mro_type = getattr(self.type, "_proxied", None)
              if not isinstance(mro_type, (bases.Instance, scoped_nodes.ClassDef)):
                  raise exceptions.SuperError(
                      "The second argument to super must be an "
                      "instance or subtype of type, not {type}.",
                      super_=self,
                  )
  
          if not mro_type.newstyle:
              raise exceptions.SuperError(
                  "Unable to call super on old-style classes.", super_=self
              )
  
          mro = mro_type.mro()
          if self.mro_pointer not in mro:
              raise exceptions.SuperError(
                  "The second argument to super must be an "
                  "instance or subtype of type, not {type}.",
                  super_=self,
              )
  
          index = mro.index(self.mro_pointer)
          return mro[index + 1 :]
docs: Get the MRO which will be used to lookup attributes in this super.