class_docstr: Internal class that manages partitioning. The ``FakePalettize`` class base classes the ``_Partitioner`` class
  and all the partitioning logic is controlled by this class.
code: def _save_to_state_dict_(self, destination, prefix, keep_vars):
      destination[prefix + "permute"] = self.cluster_permute
      destination[prefix + "partitions"] = self.partitions
  
file_path: coremltools/coremltools/optimize/torch/palettization/_partitioner.py
imports: from typing import Tuple
  import torch
  from ._efficient_kmeans import _EfficientKMeans
label_desc: Use image node_id 8 for calling the _Partitioner obj's underlying member method code with example usage: obj._save_to_state_dict_(destination, prefix, keep_vars) without return types