class_docstr: Define Unit tests for the Random optimiser on cartesian product spaces. 
docstr: Instantiate the optimiser. 
docstr_tok: ["Instantiate","the","optimiser","."]
code: def _child_instantiate_optimiser(
      cls, func_caller, worker_manager, options, reporter
  ):
      """Instantiate the optimiser."""
      return random_optimiser.CPRandomOptimiser(
          func_caller,
          worker_manager,
          options=options,
          reporter=reporter,
      )
  
imports: import os
  import unittest
label_desc: Use image node_id 1 for calling the CPRandomOptimiserTestCaseDefinitions obj's underlying member method code with example usage: obj._child_instantiate_optimiser(cls, func_caller, worker_manager, options, reporter) and returns: random_optimiser