class_docstr: An abstract key-value store interface for data parallel training.
class_docstr_tok: ["An","abstract","key-value","store","interface","for","data","parallel","training","."]
docstr: Loads the optimizer (updater) state from the file.
  
  Parameters
  ----------
  fname : str
      Path to input states file.
docstr_tok: ["Loads","the","optimizer","(","updater",")","state","from","the","file",".","Parameters","--","--","--","--","--","fname",":","str","Path","to","input","states","file","."]
code: def load_optimizer_states(self, fname):
      """Loads the optimizer (updater) state from the file.
  
      Parameters
      ----------
      fname : str
          Path to input states file.
      """
      raise NotImplementedError()
  
imports: from array import array
  import ctypes
  import warnings
  from ..ndarray import NDArray
  from ..base import _LIB, c_str_array, c_handle_array, c_array, c_array_buf, c_str
  from ..base import check_call, string_types
  from ..base import KVStoreHandle
  from ..profiler import set_kvstore_handle
label_desc: Use image node_id 6 for calling the KVStoreBase obj's underlying member method code with example usage: obj.load_optimizer_states(fname) without return types