class_docstr: Attribute mutation is not supported.
code: def forward(self, x):
      self.attr_list = self.recreate_list()
      return x.sum() + self.attr_list[0].sum()
  
imports: import torch
  from torch._export.db.case import export_case, SupportLevel
label_desc: Use image node_id 3 for calling the ModelAttrMutation obj's underlying member method code with example usage: obj.forward(x) and returns: unknown