code: def __init__(self, percentage: float) -> None:
      assert percentage >= 0 and percentage <= 1
      self._percentage: float = percentage
  
imports: import copy
  import logging
  import math
  from typing import Dict, List, Optional, Set, Tuple
  from torch import nn
  from torchrec.distributed.planner.constants import BIGINT_DTYPE, POOLING_FACTOR
  from torchrec.distributed.planner.types import ParameterConstraints, PlannerError, PlannerErrorType, Storage, StorageReservation, Topology
  from torchrec.distributed.planner.utils import sharder_name, storage_repr_in_gb
  from torchrec.distributed.types import get_tensor_size_bytes, ModuleSharder
label_desc: Use image node_id 1 to create a new FixedPercentageStorageReservation object from inherited base classes: StorageReservation with example: obj = FixedPercentageStorageReservation(percentage)