class_docstr: Blackbox Optimiser Class. 
class_docstr_tok: ["Blackbox","Optimiser","Class","."]
docstr: Header for optimisation method. 
docstr_tok: ["Header","for","optimisation","method","."]
code: def _get_opt_method_header_str(cls):
      """Header for optimisation method."""
      return ""
  
imports: from __future__ import division
  from argparse import Namespace
  import numpy
  from ..exd.exd_core import ExperimentDesigner, exd_core_args
  from ..exd.experiment_caller import MultiFunctionCaller, FunctionCaller
  from ..exd.exd_utils import EVAL_ERROR_CODE
  from ..utils.general_utils import update_pareto_set
label_desc: Use image node_id 10 for calling the MultiObjectiveOptimiser obj's underlying member method code with example usage: obj._get_opt_method_header_str(cls) and returns: str