docstr: Write calibration cache to specific path.
  
  Parameters
  ----------
  cache : str
       The calibration cache to write
code: def write_calibration_cache(self, cache):
      """
      Write calibration cache to specific path.
  
      Parameters
      ----------
      cache : str
           The calibration cache to write
      """
      with open(self.cache_file, "wb") as f:
          f.write(cache)
  
file_path: nni/nni/compression/quantization_speedup/calibrator.py
imports: import os
  import logging
  import tensorrt
  import pycuda.driver
label_desc: Use image node_id 6 for calling the Calibrator obj's underlying member method code with example usage: obj.write_calibration_cache(cache) without return types