code: def _lazy_init_class_dict(self):
      if self.class_dict:
          return
  
      op_builder_module = importlib.import_module(self.op_builder_dir())
  
      # get op builder class from op_builder/npu/__init__.py
      self.class_dict = {}
      for class_name, class_obj in inspect.getmembers(
          op_builder_module, inspect.isclass
      ):
          self.class_dict[class_name] = class_obj
  
imports: import importlib
  import inspect
  from .abstract_accelerator import DeepSpeedAccelerator
label_desc: Use image node_id 59 for calling the NPU_Accelerator obj's underlying member method code with example usage: obj._lazy_init_class_dict() without return types