docstr: Optional method to clean up any residual state on termination.
code: def cleanup(self):
      """
      Optional method to clean up any residual state on termination.
      """
      pass
  
file_path: pyro/pyro/infer/mcmc/mcmc_kernel.py
imports: from abc import ABCMeta, abstractmethod
label_desc: Use image node_id 2 for calling the MCMCKernel obj's underlying member method code with example usage: obj.cleanup() without return types