class_docstr: PerformanceInfo class
code: def block_config(self):
      return self._block_config
  
imports: from typing import List, Dict
  from enum import IntEnum
  from collections import namedtuple
  import numpy
  import tvm._ffi
  from tvm import te
  from tvm.runtime import Object
  from .stripe_config import StripeConfig
  from .device_config import EthosuDeviceConfig
  from .None import _ffi_api
label_desc: Use image node_id 4 for calling the PerformanceInfo obj's underlying member method code with example usage: obj.block_config() and returns: self