code: def new_symbolic(expr: TypedExpr) -> "IndexPropVar":
      return IndexPropVar(expr, is_symbolic=True)
  
imports: import itertools
  from dataclasses import dataclass
  from typing import Any, Callable, Dict, Literal, Optional, overload, Tuple, Union
  import sympy
  from typing_extensions import TypeAlias
  import torch
  from torch._prims_common import is_boolean_dtype, is_integer_dtype
  from torch.utils._sympy.functions import FloorDiv, ModularIndexing, Where
label_desc: Use image node_id 1 for calling the IndexPropVar obj's underlying member method code with example usage: obj.new_symbolic(expr) and returns: IndexPropVar