code: def _update_partition_count(self, sd):
      partition_counts = self._get_optimizer_state(sd, PARTITION_COUNT)
      if partition_counts:
          num_groups = len(partition_counts)
          sd[OPTIMIZER_STATE_DICT][PARTITION_COUNT] = [
              self.target_3d.dp_degree
          ] * num_groups
  
imports: import torch
  from .constants import BASE_OPTIMIZER_STATE, GROUP_PADDINGS, OPTIMIZER_STATE_DICT, PARTITION_COUNT
  from .reshape_utils import basic_folder_validation, get_zero_files, merge_state
  from .reshape_3d_utils import model_3d_desc, get_model_3d_descriptor
label_desc: Use image node_id 16 for calling the ZeROCheckpoint obj's underlying member method code with example usage: obj._update_partition_count(sd) without return types