code: def defn(self, name: Optional[str] = None) -> str:
      args_str = ", ".join(a.defn() for a in self.arguments())
      return f"TORCH_IMPL_FUNC({self.name})({args_str})"
  
imports: from dataclasses import dataclass
  from typing import Iterator, List, Optional, Sequence, Set, Tuple, Union
  from torchgen.model import BackendIndex, FunctionSchema, NativeFunction, NativeFunctionsGroup, NativeFunctionsViewGroup
  from .types_base import Binding, CType, Expr
  from torchgen.api import cpp, dispatcher, functionalization, native, structured, translate
label_desc: Use image node_id 1 for calling the StructuredImplSignature obj's underlying member method code with example usage: obj.defn(name) and returns: str, self, str, args_str, str